MESON Chess Problem Database

Problem Display
PID: 71709 (4k3/3R2P1/1PP2brN/KB2r1p1/4R3/8/8/8 w - - 0 1)

Gavrilov, Constantin Grigorievich

Revista Romana de Sah, 1935

4k3/3R2P1/1PP2brN/KB2r1p1/4R3/8/8/8

#2

8 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Rxh6
      • 2.g8Q#
      • 2.g8R#
  • Tries
    • 1.Rxe5+?
      • 1...Be7
        • 2.Rexe7#
      • 1...Bxe5!
  • Keys
    • 1.c7!
      • threat
        • 2.Rf7#
      • 1...Rxh6
        • 2.g8Q#
        • 2.g8R#
      • 1...Bxg7
        • 2.c8Q#
        • 2.c8R#
      • 1...Re7
        • 2.Rd1#
        • 2.Rd2#
        • 2.Rd3#
        • 2.Rdd4#
        • 2.Rd5#
        • 2.Rd6#
        • 2.Rdxe7#
        • 2.Rd8#
        • 2.c8Q#
        • 2.c8R#
      • 1...Be7
        • 2.Rd8#
      • 1...Bd8
        • 2.cxd8Q#
        • 2.cxd8R#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(d);N_GUARD,XS(F)::P=Q
  • Tries
    • Try
      • R(A);CHECK,N_SPINB(C),XR(a)
      • Vars
        • B(c);N_GUARD,P_SPINB(c)::R1(A),XB(c)
      • Refutation
        • B(c);XR(A)
  • Actual
    • P(E);
    • Threat
      • B(C)+R(G)
    • Vars
      • R(d);N_GUARD,XS(F)::P=Q
      • B(c);N_GUARD,XP(H)::P=Q
      • B(c);N_SPINR(a),SBLOCK::B(C)+R(G),DCHECK
      • B(c);OGATE::PXB(c)=Q
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