MESON Chess Problem Database

Problem Display
PID: 151552 (B2k1N1R/3P1P2/K2p4/3Q2P1/8/8/8/8 w - - 0 1)

Alekseev, Yuri Mikhailovich

Comm., Gravyura, 2012

B2k1N1R/3P1P2/K2p4/3Q2P1/8/8/8/8

#2

8 + 2

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Tries
    • 1.Ka7?
      • 1...Kc7
        • 2.Qa5#
      • 1...Ke7!
    • 1.Sg6+?
      • 1...Kc7
        • 2.Qc6#
        • 2.Qb7#
        • 2.d8Q#
      • 1...Kxd7!
    • 1.Sh7+?
      • 1...Kc7
        • 2.Qc6#
        • 2.Qb7#
        • 2.d8Q#
      • 1...Ke7
        • 2.d8Q#
      • 1...Kxd7!
    • 1.Qd4?
      • 1...Kc7
        • 2.Qb6#
      • 1...Ke7
        • 2.Qf6#
      • 1...d5!
    • 1.g6?
      • 1...Ke7
        • 2.Qg5#
      • 1...Kc7!
  • Keys
    • 1.Bc6!
      • 1...Kc7
        • 2.Se6#
      • 1...Ke7
        • 2.Sg6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Vars
        • K(b);S_FLIGHT::QAB(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(G);CHECK
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(a),XP(D)
    • Try
      • S(G);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::P=Q
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(a),XP(D)
    • Try
      • Q(A);
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
      • Refutation
        • P(a);
    • Try
      • P(B);
      • Vars
        • K(b);S_FLIGHT::QAB(A)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • B(F);
    • Vars
      • K(b);S_FLIGHT::S(G)
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