MESON Chess Problem Database

Problem Display
PID: 152728 (1Q5B/2N4n/2p1Pbp1/KN2k1r1/1P2PR2/p1r5/2P5/3BR3 w - - 0 1)

Alliney, Frederico

L'Italia Scacchistica, 1985

1Q5B/2N4n/2p1Pbp1/KN2k1r1/1P2PR2/p1r5/2P5/3BR3

#2

12 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf4
      • 2.Sd5#
  • Tries
    • 1.Bxf6+?
      • 1...Kxf4
        • 2.Sd5#
      • 1...Sxf6!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Scb5#
      • 1...Kxd4+
        • 2.e5#
      • 1...Kxf4+
        • 2.Sd5#
      • 1...Kd6+
        • 2.Sd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);N_SPINB(f),P_PINS(H),S_FLIGHT,XR(F)::QAB(K)+S(J),DCHECK
  • Tries
    • Try
      • B(L);CHECK,XB(f)
      • Vars
        • K(c);P_PINS(H),S_FLIGHT,XR(F)::QAB(K)+S(J),DCHECK
      • Refutation
        • S(h);XB(L)
  • Actual
    • S(H);
    • Threat
      • QAB(K)+S(J)
    • Vars
      • K(c);CHECK,OGATE,S_FLIGHT,XS(H)::R(F)+P(E)
      • K(c);CHECK,N_SPINB(f),S_FLIGHT,XR(F)::QAB(K)+S(J),DCHECK
      • K(c);CHECK,N_SPINB(f),S_FLIGHT::QAB(K)+S(J)
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