MESON Chess Problem Database

Problem Display
PID: 12039 (3Nr3/8/3Ppk1P/6bR/8/3Q4/5B2/4R1K1 w - - 0 1)

Shedey, Sergey Oleksandrovich

2nd Prize, Chervoni Girnik, 1974

3Nr3/8/3Ppk1P/6bR/8/3Q4/5B2/4R1K1

#2

8 + 4

3310 2345 Chess Problems 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Rf8
      • 2.Rxe6#
    • 1...Rg8
      • 2.Rxe6#
    • 1...Rh8
      • 2.Rxe6#
    • 1...Bh4
      • 2.Bxh4#
  • Tries
    • 1.Qf3+?
      • 1...Kg6
        • 2.Qf7#
      • 1...Bf4!
  • Keys
    • 1.Rf1!
      • threat
        • 2.Bd4#
      • 1...Ke5
        • 2.Bg3#
      • 1...Be3
        • 2.Bxe3#
      • 1...Bf4
        • 2.Bh4#
      • 1...e5
        • 2.Bh4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • R(d);N_GUARD::R1(A),XP(b)
    • B(a);OGATEB::B(C),XB(a)
  • Tries
    • Try
      • Q(D);CHECK
      • Vars
        • K(c);OGATE,P-FLIGHT::QAB1(D)
      • Refutation
        • B(a);P_SPINB(a)
  • Actual
    • R(A);
    • Threat
      • R(A)+B(C),DCHECK
    • Vars
      • K(c);P_SPINB(a),S_FLIGHT::B(C)
      • B(a);N_GUARD,P_PINB(C)::R(A)+B(C),XB(a)
      • B(a);::B(C)
      • P(b);SBLOCK::R(A)+B(C)
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