MESON Chess Problem Database

Problem Display
PID: 242271 (1Q6/8/4n1p1/4BkNR/B1pPn2K/8/8/8 w - - 0 1)

Kisis, Imants J

Schach, 1986

1Q6/8/4n1p1/4BkNR/B1pPn2K/8/8/8

#2

7 + 5

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...S4xg5
      • 2.Bc2#
      • 2.Qb1#
    • 1...S6xg5
      • 2.Bd7#
      • 2.Qc8#
  • Tries
    • 1.Bd7?
      • threat
        • 2.Bxe6#
      • 1...Sxg5
        • 2.Qb1#
      • 1...Sc5
        • 2.Qf8#
      • 1...gxh5!
    • 1.Qb1?
      • threat
        • 2.Qxe4#
      • 1...Sxg5
        • 2.Bd7#
      • 1...Sc5!
    • 1.Qc8?
      • threat
        • 2.Qxe6#
      • 1...Sxg5
        • 2.Bc2#
      • 1...Sc5!
    • 1.Qf8+?
      • 1...Sf6
        • 2.Bc2#
        • 2.Qxf6#
      • 1...Sxf8!
  • Keys
    • 1.Bc2!
      • threat
        • 2.Bxe4#
      • 1...Sxg5
        • 2.Qc8#
      • 1...Sc5
        • 2.Qf8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(A);P_PINS(d)
      • Threat
        • B(A),XS(d)
      • Vars
        • S(b);N_SPINS(d),OGATEB,P_SPINS(b),XS(E)::QAB(G)
        • S(b);N_GUARD::QAR(G)
      • Refutation
        • P(e);XR(F)
    • Try
      • Q(G);P_PINS(b)
      • Threat
        • QAB1(G),XS(b)
      • Vars
        • S(d);OGATEB,XS(E)::B(A)
      • Refutation
        • S(d);
    • Try
      • Q(G);P_PINS(d)
      • Threat
        • QAB1(G),XS(d)
      • Vars
        • S(b);N_SPINS(d),OGATEB,P_SPINS(b),XS(E)::B(A)
      • Refutation
        • S(b);
    • Try
      • Q(G);CHECK
      • Refutation
        • S(d);XQ(G)
  • Actual
    • B(A);P_PINS(b)
    • Threat
      • B(A),XS(b)
    • Vars
      • S(d);OGATEB,XS(E)::QAB(G)
      • S(d);N_GUARD::QAR(G)
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