MESON Chess Problem Database

Problem Display
PID: 246311 (7B/4K3/1pR5/1P1Pn1p1/N1Pk1nR1/3B1P2/5P2/2N5 w - - 0 1)

Bakcsi, Gyorgy

Europe Echecs, 1976

7B/4K3/1pR5/1P1Pn1p1/N1Pk1nR1/3B1P2/5P2/2N5

#2

12 + 5

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Rf6?
      • 1...Sc6+
        • 2.Rxc6#
      • 1...Sg6+
        • 2.Rxg6#
      • 1...Sxd3
        • 2.Rfxf4#
      • 1...Sxf3
        • 2.Rfxf4#
      • 1...Sxg4
        • 2.Rxf4#
      • 1...Sd7
        • 2.Rfxf4#
      • 1...Sf7
        • 2.Rfxf4#
        • 2.Rxf7#
      • 1...Sxc4!
    • 1.c5?
      • 1...Kxd5
        • 2.Rd6#
      • 1...bxc5!
  • Keys
    • 1.Be4!
      • threat
        • 2.Sb3#
      • 1...Sxd5+
        • 2.Bxd5#
      • 1...Sg6+
        • 2.Bxg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(J);
      • Vars
        • S(c);CHECK,OGATEB::B(L)+R(J),XS(c)
        • S(c);XB(C)::B(L)+R(J),DCHECK,XS(b)
        • S(c);XP(D)::B(L)+R(J),DCHECK,XS(b)
        • S(c);N_SPINS(b),XR(G)::B(L)+R(J),DCHECK,XS(b)
        • S(c);::B(L)+R(J),DCHECK,XS(b)
      • Refutation
        • S(c);XP(F)
    • Try
      • P(F);
      • Vars
        • K(a);N_SPINS(b),OGATEB,P-FLIGHT,XP(I)::R1(J)
      • Refutation
        • P(e);XP(F)
  • Actual
    • B(C);N_PINS(b),P_PINS(c)
    • Threat
      • S(A)
    • Vars
      • S(b);CHECK,OGATE,XP(I)::R(G)+B(C),XS(b)
      • S(b);CHECK,OGATEB::R(G)+B(C),XS(b)
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