MESON Chess Problem Database

Problem Display
PID: 57658 (1R1Nk1B1/rr6/4P2Q/2N5/7b/6pb/6p1/1n2Kn2 w - - 0 1)

Gavrilov, Constantin Grigorievich

1st Prize, Tidskrift for Schack, 1921

1R1Nk1B1/rr6/4P2Q/2N5/7b/6pb/6p1/1n2Kn2

#2

7 + 9

785 Het Belgisch Schaakbord (L'Echiquier Belge) 1954

SOLUTION

  • SOUND
  • Sets
    • 1...Re7
      • 2.Sc6#
      • 2.Sdb7#
      • 2.Sf7#
    • 1...Be7
      • 2.Bf7#
  • Tries
    • 1.Sc6+?
      • 1...Bd8
        • 2.Rxd8#
      • 1...Rxb8!
    • 1.Sdxb7+?
      • 1...Ke7
        • 2.Qg7#
        • 2.Qf8#
        • 2.Qxh4#
      • 1...Bd8!
  • Keys
    • 1.e7!
      • threat
        • 2.Qf8#
      • 1...Rxe7+
        • 2.Sde6#
      • 1...Kxe7
        • 2.Sc6#
      • 1...Bxe7
        • 2.Bf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(f);SBLOCK,S_CUTR(h)::B(G)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • B(f);N_GUARD,P_SPINB(f)::R1(E),XB(f)
      • Refutation
        • R(h);XR(E)
    • Try
      • S(F);CHECK,XR(h)
      • Refutation
        • B(f);P_SPINB(f)
  • Actual
    • P(C);
    • Threat
      • QAR1(D)
    • Vars
      • R(h);CHECK,N_GUARD,SBLOCK,XP(C)::R(E)+S(F)
      • K(i);P-FLIGHT,XP(C)::S(F)
      • B(f);SBLOCK,XP(C)::B(G)
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