MESON Chess Problem Database

Problem Display
PID: 154428 (5R2/3p1p2/2pP4/2K2kPb/4pP1R/1Q6/B1P5/8 w - - 0 1)

Markwick, Frederick W

The Globe, 1912

(First published on Sat Jul 15 1911)

5R2/3p1p2/2pP4/2K2kPb/4pP1R/1Q6/B1P5/8

#2

9 + 6

15351 SCPF/BCPS Black Books 2015
15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kg6
      • 2.Qxf7#
    • 1...Bd1
      • 2.Qxf7#
    • 1...Be2
      • 2.Qxf7#
    • 1...Bf3
      • 2.Qxf7#
    • 1...Bg4
      • 2.Qxf7#
    • 1...Bg6
      • 2.Qh3#
    • 1...e3
      • 2.Qd3#
    • 1...f6
      • 2.Rxf6#
  • Tries
    • 1.Kb4?
      • 1...Kg6
        • 2.Qxf7#
      • 1...Bg4
        • 2.Qxf7#
      • 1...e3
        • 2.Qd3#
      • 1...Bd1
        • 2.Qxf7#
      • 1...Be2
        • 2.Qxf7#
      • 1...Bf3
        • 2.Qxf7#
      • 1...Bg6
        • 2.Qh3#
      • 1...f6
        • 2.Rxf6#
      • 1...c5+!
    • 1.Kd4?
      • 1...Kg6
        • 2.Qxf7#
      • 1...Bg4
        • 2.Qxf7#
      • 1...Bd1
        • 2.Qxf7#
      • 1...Be2
        • 2.Qxf7#
      • 1...Bf3
        • 2.Qxf7#
      • 1...Bg6
        • 2.Qh3#
      • 1...e3
        • 2.Qd3#
      • 1...f6
        • 2.Rxf6#
      • 1...c5+!
    • 1.Kb6?
      • 1...Kg6
        • 2.Qxf7#
      • 1...Bg4
        • 2.Qxf7#
      • 1...e3
        • 2.Qd3#
      • 1...Bd1
        • 2.Qxf7#
      • 1...Be2
        • 2.Qxf7#
      • 1...Bf3
        • 2.Qxf7#
      • 1...Bg6
        • 2.Qh3#
      • 1...f6
        • 2.Rxf6#
      • 1...c5!
    • 1.Rxf7+?
      • 1...Bxf7
        • 2.Qxf7#
      • 1...Kg6!
    • 1.Ra8?
      • 1...Kg6
        • 2.Qxf7#
      • 1...Bg4
        • 2.Qxf7#
      • 1...e3
        • 2.Qd3#
      • 1...Bd1
        • 2.Qxf7#
      • 1...Be2
        • 2.Qxf7#
      • 1...Bf3
        • 2.Qxf7#
      • 1...Bg6
        • 2.Qh3#
      • 1...f6!
    • 1.Rb8?
      • 1...Kg6
        • 2.Qxf7#
      • 1...Bg4
        • 2.Qxf7#
      • 1...e3
        • 2.Qd3#
      • 1...Bd1
        • 2.Qxf7#
      • 1...Be2
        • 2.Qxf7#
      • 1...Bf3
        • 2.Qxf7#
      • 1...Bg6
        • 2.Qh3#
      • 1...f6!
    • 1.Rc8?
      • 1...Kg6
        • 2.Qxf7#
      • 1...Bg4
        • 2.Qxf7#
      • 1...e3
        • 2.Qd3#
      • 1...Bd1
        • 2.Qxf7#
      • 1...Be2
        • 2.Qxf7#
      • 1...Bf3
        • 2.Qxf7#
      • 1...Bg6
        • 2.Qh3#
      • 1...f6!
    • 1.Rd8?
      • 1...Kg6
        • 2.Qxf7#
      • 1...Bg4
        • 2.Qxf7#
      • 1...e3
        • 2.Qd3#
      • 1...Bd1
        • 2.Qxf7#
      • 1...Be2
        • 2.Qxf7#
      • 1...Bf3
        • 2.Qxf7#
      • 1...Bg6
        • 2.Qh3#
      • 1...f6!
    • 1.Re8?
      • 1...Kg6
        • 2.Qxf7#
      • 1...Bg4
        • 2.Qxf7#
      • 1...Bd1
        • 2.Qxf7#
      • 1...Be2
        • 2.Qxf7#
      • 1...Bf3
        • 2.Qxf7#
      • 1...Bg6
        • 2.Re5#
        • 2.Qh3#
      • 1...e3
        • 2.Qd3#
      • 1...f6!
    • 1.Rg8?
      • 1...Bg4
        • 2.Qxf7#
      • 1...e3
        • 2.Qd3#
      • 1...Bd1
        • 2.Qxf7#
      • 1...Be2
        • 2.Qxf7#
      • 1...Bf3
        • 2.Qxf7#
      • 1...Bg6
        • 2.Qh3#
      • 1...f6!
    • 1.Rh8?
      • 1...Kg6
        • 2.Qxf7#
      • 1...Bg4
        • 2.Qxf7#
      • 1...e3
        • 2.Qd3#
      • 1...Bd1
        • 2.Qxf7#
      • 1...Be2
        • 2.Qxf7#
      • 1...Bf3
        • 2.Qxf7#
      • 1...Bg6
        • 2.Qh3#
      • 1...f6!
    • 1.Qc4?
      • 1...Kg6
        • 2.Qxf7#
      • 1...Bg4
        • 2.Qxf7#
      • 1...f6
        • 2.Rxf6#
      • 1...Bd1
        • 2.Qxf7#
      • 1...Be2
        • 2.Qxf7#
      • 1...Bf3
        • 2.Qxf7#
      • 1...e3
        • 2.Qd3#
      • 1...Bg6!
    • 1.Qd5+?
      • 1...Kg6
        • 2.Qxf7#
      • 1...cxd5!
    • 1.Qc3?
      • threat
        • 2.Qf6#
      • 1...e3
        • 2.Qd3#
      • 1...f6
        • 2.Rxf6#
        • 2.Qxf6#
      • 1...Kg6!
    • 1.c3?
      • 1...Kg6
        • 2.Qxf7#
      • 1...Bg4
        • 2.Qxf7#
      • 1...e3
        • 2.Bb1#
        • 2.Qc2#
        • 2.Qb1#
      • 1...f6
        • 2.Rxf6#
      • 1...Bd1
        • 2.Qxf7#
      • 1...Be2
        • 2.Qxf7#
      • 1...Bf3
        • 2.Qxf7#
      • 1...Bg6!
  • Keys
    • 1.Bb1!
      • 1...Kg6
        • 2.Qxf7#
      • 1...Bg4
        • 2.Qxf7#
      • 1...e3
        • 2.c3#
      • 1...Bd1
        • 2.Qxf7#
      • 1...Be2
        • 2.Qxf7#
      • 1...Bf3
        • 2.Qxf7#
      • 1...Bg6
        • 2.Qh3#
      • 1...f6
        • 2.Rxf6#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(b);N_SPINP(f),S_FLIGHT::QAB1(C),XP(f)
    • B(c);N_GUARD::QAR2(C),XP(f)
    • B(c);N_GUARD,SBLOCK::QAB(C)
    • P(a);OGATEB::QAB(C)
    • P(f);OGATE::R1(I),XP(f)
  • Tries
    • Try
      • K(F);S_FLIGHT
      • Vars
        • K(b);N_SPINP(f),S_FLIGHT::QAB1(C),XP(f)
        • B(c);N_GUARD::QAR2(C),XP(f)
        • P(a);OGATEB::QAB(C)
        • B(c);N_GUARD,SBLOCK::QAB(C)
        • P(f);OGATE::R1(I),XP(f)
      • Refutation
        • P(d);CHECK
    • Try
      • K(F);S_FLIGHT
      • Vars
        • K(b);N_SPINP(f),S_FLIGHT::QAB1(C),XP(f)
        • B(c);N_GUARD::QAR2(C),XP(f)
        • B(c);N_GUARD,SBLOCK::QAB(C)
        • P(a);OGATEB::QAB(C)
        • P(f);OGATE::R1(I),XP(f)
      • Refutation
        • P(d);CHECK
    • Try
      • K(F);S_FLIGHT
      • Vars
        • K(b);N_SPINP(f),S_FLIGHT::QAB1(C),XP(f)
        • B(c);N_GUARD::QAR2(C),XP(f)
        • P(a);OGATEB::QAB(C)
        • B(c);N_GUARD,SBLOCK::QAB(C)
        • P(f);OGATE::R1(I),XP(f)
      • Refutation
        • P(d);
    • Try
      • R(I);CHECK,XP(f)
      • Vars
        • B(c);OGATE,XR(I)::QAR2(C),XB(c)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(I);N_PINP(f)
      • Vars
        • K(b);S_FLIGHT::QAB1(C),XP(f)
        • B(c);N_GUARD::QAR2(C),XP(f)
        • P(a);OGATEB::QAB(C)
        • B(c);N_GUARD,SBLOCK::QAB(C)
      • Refutation
        • P(f);
    • Try
      • R(I);N_PINP(f)
      • Vars
        • K(b);S_FLIGHT::QAB1(C),XP(f)
        • B(c);N_GUARD::QAR2(C),XP(f)
        • P(a);OGATEB::QAB(C)
        • B(c);N_GUARD,SBLOCK::QAB(C)
      • Refutation
        • P(f);
    • Try
      • R(I);N_PINP(f)
      • Vars
        • K(b);S_FLIGHT::QAB1(C),XP(f)
        • B(c);N_GUARD::QAR2(C),XP(f)
        • P(a);OGATEB::QAB(C)
        • B(c);N_GUARD,SBLOCK::QAB(C)
      • Refutation
        • P(f);
    • Try
      • R(I);N_PINP(f)
      • Vars
        • K(b);S_FLIGHT::QAB1(C),XP(f)
        • B(c);N_GUARD::QAR2(C),XP(f)
        • P(a);OGATEB::QAB(C)
        • B(c);N_GUARD,SBLOCK::QAB(C)
      • Refutation
        • P(f);
    • Try
      • R(I);N_PINP(f)
      • Vars
        • K(b);S_FLIGHT::QAB1(C),XP(f)
        • B(c);N_GUARD::QAR2(C),XP(f)
        • P(a);OGATEB::QAB(C)
      • Refutation
        • P(f);
    • Try
      • R(I);N_PINP(f)
      • Vars
        • B(c);N_GUARD::QAR2(C),XP(f)
        • P(a);OGATEB::QAB(C)
        • B(c);N_GUARD::QAB(C)
      • Refutation
        • P(f);
    • Try
      • R(I);N_PINP(f)
      • Vars
        • K(b);S_FLIGHT::QAB1(C),XP(f)
        • B(c);N_GUARD::QAR2(C),XP(f)
        • P(a);OGATEB::QAB(C)
        • B(c);N_GUARD,SBLOCK::QAB(C)
      • Refutation
        • P(f);
    • Try
      • Q(C);
      • Vars
        • K(b);N_SPINP(f),S_FLIGHT::QAB1(C),XP(f)
        • B(c);N_GUARD::QAR2(C),XP(f)
        • P(f);OGATE::R1(I),XP(f)
        • P(a);OGATEB::QAB(C)
      • Refutation
        • B(c);
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);N_SPINP(f),S_FLIGHT::QAB1(C),XP(f)
      • Refutation
        • P(d);XQ(C)
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Vars
        • P(a);OGATEB::QAB(C)
      • Refutation
        • K(b);N_SPINP(f),S_FLIGHT
    • Try
      • P(B);
      • Vars
        • K(b);N_SPINP(f),S_FLIGHT::QAB1(C),XP(f)
        • B(c);N_GUARD::QAR2(C),XP(f)
        • P(f);OGATE::R1(I),XP(f)
      • Refutation
        • B(c);
  • Actual
    • B(A);
    • Vars
      • K(b);N_SPINP(f),S_FLIGHT::QAB1(C),XP(f)
      • B(c);N_GUARD::QAR2(C),XP(f)
      • P(a);::B(A)+P(B)
      • B(c);N_GUARD,SBLOCK::QAB(C)
      • P(f);OGATE::R1(I),XP(f)
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