MESON Chess Problem Database

Problem Display
PID: 241335 (bQn2K2/2R2pN1/3k1p2/p2NbR2/prrP4/B1P2P2/B7/8 w - - 0 1)

Gavrilov, Constantin Grigorievich

Revista Romana de Sah, 1931

bQn2K2/2R2pN1/3k1p2/p2NbR2/prrP4/B1P2P2/B7/8

#2

11 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd5
      • 2.Rc5#
    • 1...Rc5
      • 2.dxc5#
    • 1...Rxc7
      • 2.Qxc7#
    • 1...Sa7
      • 2.Qd8#
    • 1...Se7
      • 2.Qd8#
  • Tries
    • 1.Rxf6+?
      • 1...Kxd5
        • 2.Rc5#
      • 1...Bxf6!
    • 1.Rxc4+?
      • 1...Kxd5
        • 2.Rc5#
      • 1...Kd7!
    • 1.Rc6+?
      • 1...Kxd5
        • 2.Rc5#
      • 1...Kd7
        • 2.Qxc8#
      • 1...Kxc6!
    • 1.Rxc8+?
      • 1...Kxd5
        • 2.Rc5#
      • 1...Rc7
        • 2.Qxc7#
      • 1...Kd7!
    • 1.Qxc8?
      • threat
        • 2.Rd7#
        • 2.Qd7#
        • 2.Qd8#
      • 1...Kxd5
        • 2.Rd7#
        • 2.Qd7#
        • 2.Qd8#
      • 1...Rxc7
        • 2.Qxc7#
      • 1...Bc6!
  • Keys
    • 1.Ke8!
      • 1...Bc6+
        • 2.Rd7#
      • 1...Kxd5
        • 2.Rc5#
      • 1...Rxc3
        • 2.Rxc3#
      • 1...Rxd4
        • 2.Rxc8#
      • 1...Rxc7
        • 2.Qxc7#
      • 1...Bxd4
        • 2.Rxc4#
      • 1...Bxd5
        • 2.Rxc4#
      • 1...Rc5
        • 2.dxc5#
      • 1...Rc6
        • 2.Rd7#
      • 1...Bh2
        • 2.Rxc4#
      • 1...Bg3
        • 2.Rxc4#
      • 1...Bf4
        • 2.Rxc4#
      • 1...Bb7
        • 2.Rc5#
      • 1...Sb6
        • 2.Rc5#
      • 1...Sa7
        • 2.Qd8#
      • 1...Se7
        • 2.Qd8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
    • K(f);N_SPINR(b),P-FLIGHT,P_SPINB(e),P_SPINR(c),XS(F)::R1(H)
    • R(c);N_SPINR(b),OGATE::P(E),XR(c)
    • R(c);OGATE,XR(H)::QAB1(J),XR(c)
    • S(j);OGATE::QAR2(J)
  • Tries
    • Try
      • R(G);CHECK,XP(g)
      • Vars
        • K(f);N_SPINR(b),P-FLIGHT,P_SPINR(c),XS(F)::R1(H)
      • Refutation
        • B(e);XR(G)
    • Try
      • R(H);CHECK,XR(c)
      • Vars
        • K(f);N_SPINR(b),P-FLIGHT,P_SPINB(e),XS(F)::B(A)+R(H),DCHECK
      • Refutation
        • K(f);N_SPINR(b),P-FLIGHT
    • Try
      • R(H);CHECK
      • Vars
        • K(f);N_SPINR(b),P-FLIGHT,P_SPINB(e),P_SPINR(c),XS(F)::R1(H)
        • K(f);N_SPINR(b),P-FLIGHT::QAB1(J),XS(j)
      • Refutation
        • K(f);N_SPINR(b),P-FLIGHT,XR(H)
    • Try
      • R(H);CHECK,XS(j)
      • Vars
        • K(f);N_SPINR(b),P-FLIGHT,P_SPINB(e),P_SPINR(c),XS(F)::R1(H)
        • R(c);N_GUARD::QAB1(J),XR(c)
      • Refutation
        • K(f);N_SPINR(b),P-FLIGHT
    • Try
      • Q(J);XS(j)
      • Threat
        • DUALS(3)
      • Vars
        • R(c);OGATE,XR(H)::QAB1(J),XR(c)
      • Refutation
        • B(i);
  • Actual
    • K(K);P-FLIGHT
    • Vars
      • B(i);CHECK,SBLOCK::QAB(J)+R(H),DCHECK
      • K(f);N_SPINR(b),P-FLIGHT,P_SPINB(e),P_SPINR(c),XS(F)::R1(H)
      • R(c);OGATE,XP(C)::QAB(J)+R(H),XR(c)
      • R(c);N_GUARD,XP(E)::QAB(J)+R(H),XS(j)
      • R(c);OGATE,XR(H)::QAB1(J),XR(c)
      • B(e);XP(E)::QAB(J)+R(H),XR(c)
      • B(i);SBLOCK,XS(F)::QAB(J)+R(H),XR(c)
      • R(c);N_SPINR(b),OGATE::P(E),XR(c)
      • R(c);SBLOCK::QAB(J)+R(H),DCHECK
      • B(e);::QAB(J)+R(H),XR(c)
      • B(i);::QAB(J)+R(H)
      • S(j);::QAB(J)+R(H)
      • S(j);OGATE::QAR2(J)
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