MESON Chess Problem Database

Problem Display
PID: 169311 (4R3/7B/8/3K4/1p6/1N6/3NP3/3kq1Q1 w - - 0 1)

Kapustin, Fedor Mikhailovich

Comm., SuperProblem 186. TT, 2017

4R3/7B/8/3K4/1p6/1N6/3NP3/3kq1Q1

#2

7 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qf1
      • 2.Qxf1#
  • Tries
    • 1.Kc4?
      • 1...Qf1
        • 2.Qxf1#
      • 1...Qxg1!
    • 1.Kd4?
      • 1...Qf1
        • 2.Qxf1#
      • 1...Qxg1+!
    • 1.Kc5?
      • 1...Qf1
        • 2.Qxf1#
      • 1...Qxg1+!
    • 1.Kc6?
      • 1...Qf1
        • 2.Qxf1#
      • 1...Qxg1!
    • 1.Kd6?
      • 1...Qf1
        • 2.Qxf1#
      • 1...Qxg1!
    • 1.Sb1?
      • 1...Qf1
        • 2.Qxf1#
      • 1...Qxg1!
    • 1.Sf1?
      • 1...Qd2+
        • 2.Sfxd2#
      • 1...Qxf1
        • 2.Qxf1#
      • 1...Qxe2
        • 2.Se3#
      • 1...Qc3
        • 2.Sfd2#
      • 1...Qg3
        • 2.Sxg3#
      • 1...Qh4
        • 2.Sg3#
      • 1...Qf2!
    • 1.Sf3?
      • threat
        • 2.Qxe1#
      • 1...Qf1
        • 2.Qd4#
        • 2.Qxf1#
      • 1...Qxg1!
    • 1.Sc4?
      • threat
        • 2.Sb2#
      • 1...Qf1
        • 2.Qxf1#
      • 1...Qxg1!
    • 1.Bb1?
      • 1...Qf1
        • 2.Qxf1#
      • 1...Qxg1!
    • 1.Bd3?
      • 1...Qf1
        • 2.Qxf1#
      • 1...Qxg1!
    • 1.Be4?
      • 1...Kxe2
        • 2.Bc2#
      • 1...Qf1
        • 2.Qxf1#
      • 1...Qxg1!
    • 1.Bf5?
      • 1...Qf1
        • 2.Qxf1#
      • 1...Qxg1!
    • 1.Bg6?
      • 1...Qf1
        • 2.Qxf1#
      • 1...Qxg1!
    • 1.Re3?
      • 1...Qf1
        • 2.Qxf1#
      • 1...Qxg1!
    • 1.Re5?
      • 1...Qf1
        • 2.Qxf1#
      • 1...Qxg1!
    • 1.Re6?
      • 1...Qf1
        • 2.Qxf1#
      • 1...Qxg1!
    • 1.Re7?
      • 1...Qf1
        • 2.Qxf1#
      • 1...Qxg1!
    • 1.Qh1?
      • 1...Qf1
        • 2.Qxf1#
      • 1...Qg1
        • 2.Qxg1#
      • 1...Qxh1+!
  • Keys
    • 1.Qd4!
      • threat
        • 2.Qa1#
      • 1...Qh1+
        • 2.Sf3#
      • 1...Qxd2
        • 2.Qxd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • Q(b);OGATEB::QAR2(A),XQ(b)
  • Tries
    • Try
      • K(E);S_FLIGHT
      • Vars
        • Q(b);OGATEB,P_PINP(C)::QAR2(A),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XQ(A)
    • Try
      • K(E);P-FLIGHT
      • Vars
        • Q(b);OGATEB::QAR2(A),XQ(b)
      • Refutation
        • Q(b);CHECK,N_SPINQ(b),XQ(A)
    • Try
      • K(E);P-FLIGHT
      • Vars
        • Q(b);OGATEB::QAR2(A),XQ(b)
      • Refutation
        • Q(b);CHECK,N_SPINQ(b),XQ(A)
    • Try
      • K(E);S_FLIGHT
      • Vars
        • Q(b);OGATEB::QAR2(A),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XQ(A)
    • Try
      • K(E);P-FLIGHT
      • Vars
        • Q(b);OGATEB::QAR2(A),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XQ(A)
    • Try
      • S(B);
      • Vars
        • Q(b);OGATEB::QAR2(A),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XQ(A)
    • Try
      • S(B);N_PINQ(b)
      • Vars
        • Q(b);CHECK::QAR(A)+S(B),XQ(b)
        • Q(b);OGATE,P_SPINQ(b),XS(B)::QAR2(A),XQ(b)
        • Q(b);SBLOCK,XP(C)::QAR(A)+S(B),DCHECK
        • Q(b);::QAR(A)+S(B)
        • Q(b);::QAR(A)+S(B),XQ(b)
      • Refutation
        • Q(b);
    • Try
      • S(B);
      • Threat
        • QAR1(A),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XQ(A)
    • Try
      • S(B);
      • Threat
        • S(B)
      • Vars
        • Q(b);OGATEB::QAR2(A),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XQ(A)
    • Try
      • B(F);
      • Vars
        • Q(b);OGATEB::QAR2(A),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XQ(A)
    • Try
      • B(F);
      • Vars
        • Q(b);OGATEB::QAR2(A),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XQ(A)
    • Try
      • B(F);
      • Vars
        • K(a);N_SPINQ(b),S_FLIGHT,XP(C)::R(G)+B(F)
        • Q(b);OGATEB::QAR2(A),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XQ(A)
    • Try
      • B(F);
      • Vars
        • Q(b);OGATEB::QAR2(A),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XQ(A)
    • Try
      • B(F);
      • Vars
        • Q(b);OGATEB::QAR2(A),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XQ(A)
    • Try
      • R(G);
      • Vars
        • Q(b);OGATEB::QAR2(A),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XQ(A)
    • Try
      • R(G);
      • Vars
        • Q(b);OGATEB::QAR2(A),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XQ(A)
    • Try
      • R(G);
      • Vars
        • Q(b);OGATEB::QAR2(A),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XQ(A)
    • Try
      • R(G);
      • Vars
        • Q(b);OGATEB::QAR2(A),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XQ(A)
    • Try
      • Q(A);
      • Vars
        • Q(b);OGATEB::QAR2(A),XQ(b)
        • Q(b);OGATEB::QAR(A),XQ(b)
      • Refutation
        • Q(b);CHECK,N_SPINQ(b),XQ(A)
  • Actual
    • Q(A);N_PINQ(b)
    • Threat
      • QAR(A)
    • Vars
      • Q(b);CHECK,N_GUARD::QAR(A)+S(B)
      • Q(b);OGATE,P_PINQ(A),P_SPINQ(b),XS(B)::QAR1(A),XQ(b)
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