MESON Chess Problem Database

Problem Display
PID: 16451 (8/4R3/3Rr3/Q2PkP2/4N2P/3B2N1/3P2PB/4K3 w - - 0 1)

Loshinski, Lev Ilich

Shakhmaty v SSSR, 1940

8/4R3/3Rr3/Q2PkP2/4N2P/3B2N1/3P2PB/4K3

#2

13 + 2

5314 Grossmeister Shakhmatnoi Kompozitsii 1980

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qc3#
      • 2.dxe6#
  • Tries
    • 1.Sf1+?
      • 1...Kd4
        • 2.Qc3#
        • 2.dxe6#
      • 1...Kxf5!
    • 1.Sh1+?
      • 1...Kd4
        • 2.Qc3#
        • 2.dxe6#
      • 1...Kxf5!
    • 1.Sh5+?
      • 1...Kd4
        • 2.Qc3#
        • 2.dxe6#
      • 1...Kxf5!
    • 1.Sf2?
      • 1...Kd4+
        • 2.dxe6#
      • 1...Kf4+
        • 2.Se2#
      • 1...Kf6+
        • 2.Rdxe6#
      • 1...Rxe7
        • 2.Se2#
      • 1...Kxd6+!
    • 1.Rexe6+?
      • 1...Kd4
        • 2.Qc3#
      • 1...Kf4!
    • 1.fxe6?
      • 1...Kd4
        • 2.Qc3#
      • 1...Kf4!
  • Keys
    • 1.Sf6!
      • 1...Kd4+
        • 2.dxe6#
      • 1...Kf4+
        • 2.Se2#
      • 1...Kxd6+
        • 2.Rxe6#
      • 1...Kxf6+
        • 2.Rdxe6#
      • 1...Rxe7
        • 2.Se2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);CHECK
      • Refutation
        • K(a);N_SPINR(b),P-FLIGHT,P_PINS(G),XP(K)
    • Try
      • S(F);CHECK
      • Refutation
        • K(a);N_SPINR(b),P-FLIGHT,P_PINS(G),XP(K)
    • Try
      • S(F);CHECK
      • Refutation
        • K(a);N_SPINR(b),P-FLIGHT,P_PINS(G),XP(K)
    • Try
      • S(G);
      • Vars
        • K(a);CHECK,N_SPINR(b),S_FLIGHT::R(L)+P(J),XR(b)
        • K(a);CHECK,N_SPINR(b),S_FLIGHT::B(D)+S(F),DCHECK
        • K(a);CHECK,S_FLIGHT::R1(L),XR(b)
        • R(b);N_SPINR(b),XR(M)::B(D)+S(F)
      • Refutation
        • K(a);CHECK,N_SPINR(b),S_FLIGHT,XR(L)
    • Try
      • R(M);CHECK,XR(b)
      • Vars
        • K(a);S_FLIGHT::QAB1(I)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(K);XR(b)
      • Vars
        • K(a);S_FLIGHT::QAB1(I)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(G);
    • Vars
      • K(a);CHECK,N_SPINR(b),S_FLIGHT::R(L)+P(J),XR(b)
      • K(a);CHECK,N_SPINR(b),S_FLIGHT::B(D)+S(F),DCHECK
      • K(a);CHECK,N_SPINR(b),S_FLIGHT,XR(L)::R1(M),XR(b)
      • K(a);CHECK,S_FLIGHT,XS(G)::R1(L),XR(b)
      • R(b);N_SPINR(b),XR(M)::B(D)+S(F)
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