MESON Chess Problem Database

Problem Display
PID: 276258 (4b1R1/4Rp2/5pN1/1p5k/6n1/3K4/8/2BB4 w - - 0 1)

Bakcsi, Gyorgy

Mat, 1981

4b1R1/4Rp2/5pN1/1p5k/6n1/3K4/8/2BB4

#2

6 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...fxg6
      • 2.Rh7#
      • 2.Rh8#
  • Tries
    • 1.Sf4+?
      • 1...Kh4
        • 2.Rxg4#
      • 1...Kh6!
    • 1.Re2?
      • threat
        • 2.Rh2#
      • 1...Sf2+
        • 2.Rxf2#
      • 1...Se5+
        • 2.Rxe5#
      • 1...Sh2
        • 2.Rxh2#
        • 2.Re5#
      • 1...Se3!
    • 1.Re5+?
      • 1...f5
        • 2.Rxf5#
      • 1...fxe5!
  • Keys
    • 1.Re3!
      • threat
        • 2.Rh3#
      • 1...Kg5
        • 2.Re5#
      • 1...Kh6
        • 2.Rh3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(c);N_GUARD,N_SPINS(a),P-FLIGHT::R1(F),XS(a)
      • Refutation
        • K(c);N_SPINS(a),P-FLIGHT
    • Try
      • R(E);N_PINS(a)
      • Threat
        • R(E)
      • Vars
        • S(a);CHECK,OGATEB::B(B)+R(E),XS(a)
        • S(a);CHECK::B(B)+R(E),DCHECK,XS(a)
      • Refutation
        • S(a);
    • Try
      • R(E);CHECK
      • Vars
        • P(d);P_SPINP(d)::R(E),XP(d)
      • Refutation
        • P(d);XR(E)
  • Actual
    • R(E);
    • Threat
      • R(E)
    • Vars
      • K(c);N_SPINS(a),P-FLIGHT::B(A)+R(E),DCHECK
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