MESON Chess Problem Database

Problem Display
PID: 196652 (8/1pQ5/3p2N1/n2k1P1K/b5R1/4B3/4P3/b7 w - - 0 1)

Shire, David J

The Problemist Supplement, 2019

8/1pQ5/3p2N1/n2k1P1K/b5R1/4B3/4P3/b7

#2

7 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Bd4
      • 2.Rxd4#
    • 1...Be5
      • 2.Se7#
    • 1...Bc6
      • 2.Qf7#
    • 1...Sb3
      • 2.Qc4#
    • 1...Sc4
      • 2.Qxc4#
    • 1...Sc6
      • 2.Qf7#
  • Tries
    • 1.Bg1?
      • threat
        • 2.e4#
      • 1...Bc6
        • 2.Qf7#
      • 1...Sc6
        • 2.Qf7#
      • 1...Bc2!
    • 1.Bf2?
      • threat
        • 2.e4#
      • 1...Bc6
        • 2.Qf7#
      • 1...Sc6
        • 2.Qf7#
      • 1...Bc2!
    • 1.Bd4?
      • threat
        • 2.Se7#
      • 1...Bxd4
        • 2.e4#
      • 1...Bc6
        • 2.Qf7#
      • 1...Sc6
        • 2.Qf7#
      • 1...Be8!
    • 1.Bb6?
      • threat
        • 2.e4#
      • 1...Bc6
        • 2.Qf7#
      • 1...Sc6
        • 2.Qf7#
      • 1...Bc2!
    • 1.Qxa5+?
      • 1...Bb5
        • 2.Qxb5#
      • 1...b5
        • 2.Qa8#
      • 1...Kc6!
    • 1.Qc2?
      • threat
        • 2.Qe4#
      • 1...Bd4
        • 2.Rxd4#
      • 1...Bxc2!
    • 1.Qc3?
      • threat
        • 2.Se7#
        • 2.Rd4#
      • 1...Sc4
        • 2.Se7#
        • 2.Qxc4#
      • 1...Be8
        • 2.Rd4#
      • 1...Sb3
        • 2.Se7#
        • 2.Qc4#
      • 1...Sc6
        • 2.Qc4#
      • 1...Bxc3!
    • 1.Qxb7+?
      • 1...Bc6
        • 2.Qf7#
      • 1...Sc6
        • 2.Qf7#
      • 1...Sxb7!
  • Keys
    • 1.Bc5!
      • threat
        • 2.Qxd6#
      • 1...dxc5
        • 2.Se7#
      • 1...Bd4
        • 2.Rxd4#
      • 1...Be5
        • 2.Se7#
      • 1...Sc4
        • 2.e4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • B(a);N_GUARD::R1(C),XB(a)
    • B(a);SBLOCK::S(F)
    • B(b);SBLOCK::QAB(G)
    • S(c);N_GUARD::QAB1(G)
    • S(c);N_GUARD::QAB1(G),XS(c)
    • S(c);SBLOCK::QAB(G)
  • Tries
    • Try
      • B(B);
      • Threat
        • P(A)
      • Vars
        • B(b);SBLOCK::QAB(G)
        • S(c);SBLOCK::QAB(G)
      • Refutation
        • B(b);
    • Try
      • B(B);
      • Threat
        • P(A)
      • Vars
        • B(b);SBLOCK::QAB(G)
        • S(c);SBLOCK::QAB(G)
      • Refutation
        • B(b);
    • Try
      • B(B);
      • Threat
        • S(F)
      • Vars
        • B(a);SBLOCK,XB(B)::P(A)
        • B(b);SBLOCK::QAB(G)
        • S(c);SBLOCK::QAB(G)
      • Refutation
        • B(b);P_PINS(F)
    • Try
      • B(B);
      • Threat
        • P(A)
      • Vars
        • B(b);SBLOCK::QAB(G)
        • S(c);SBLOCK::QAB(G)
      • Refutation
        • B(b);
    • Try
      • Q(G);CHECK,XS(c)
      • Vars
        • B(b);N_GUARD,P_SPINB(b)::QAR2(G),XB(b)
        • P(f);OGATEB,P_SPINP(f)::QAB(G)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(G);
      • Threat
        • QAB1(G)
      • Vars
        • B(a);N_GUARD::R1(C),XB(a)
      • Refutation
        • B(b);XQ(G)
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • B(b);P_PINS(F)::R1(C)
        • S(c);N_GUARD::QAB1(G)
      • Refutation
        • B(a);XQ(G)
    • Try
      • Q(G);CHECK,XP(f)
      • Vars
        • B(b);P_SPINB(b),SBLOCK::QAB(G)
        • S(c);P_SPINS(c),SBLOCK::QAB(G)
      • Refutation
        • S(c);XQ(G)
  • Actual
    • B(B);
    • Threat
      • QAR1(G),XP(e)
    • Vars
      • P(e);XB(B)::S(F)
      • B(a);N_GUARD::R1(C),XB(a)
      • B(a);SBLOCK::S(F)
      • S(c);SBLOCK::P(A)
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