MESON Chess Problem Database

Problem Display
PID: 110099 (8/B7/3R2pP/1prp4/r2k1N2/p5R1/2B3PQ/2K5 w - - 0 1)

Kisis, Imants J

UV CSTV, 1987

8/B7/3R2pP/1prp4/r2k1N2/p5R1/2B3PQ/2K5

#2

9 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Rxd5#
  • Tries
    • 1.Se2+?
      • 1...Ke5
        • 2.Re3#
        • 2.Rg5#
      • 1...Kc4!
    • 1.Sxd5?
      • threat
        • 2.Rg4#
      • 1...Kc4
        • 2.Rg4#
        • 2.Qh4#
      • 1...Ke5!
    • 1.Qg1+?
      • 1...Kc4
        • 2.Qxc5#
      • 1...Ke5!
    • 1.Qh4?
      • threat
        • 2.Sxg6#
      • 1...Kc4
        • 2.Sxd5#
      • 1...Ke5
        • 2.Qf6#
      • 1...g5!
  • Keys
    • 1.Rg4!
      • threat
        • 2.Sxd5#
      • 1...Kc3
        • 2.Se2#
      • 1...Ke3
        • 2.Qg1#
      • 1...Kc4
        • 2.Sxd5#
      • 1...Ke5
        • 2.Sxg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(b);SBLOCK::R1(G),XP(f)
  • Tries
    • Try
      • S(F);CHECK
      • Refutation
        • K(c);N_PINB(B),N_SPINP(f),N_SPINR(e),P-FLIGHT
    • Try
      • S(F);XP(f)
      • Threat
        • R(E)
      • Refutation
        • K(c);N_SPINR(e),S_FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(c);N_PINB(B),N_SPINP(f),N_SPINR(e),OGATE,P-FLIGHT::QAR1(D),XR(e)
      • Refutation
        • K(c);N_SPINP(f),N_SPINR(e),S_FLIGHT
    • Try
      • Q(D);
      • Threat
        • QAR(D)+S(F),XP(g)
      • Vars
        • K(c);N_PINB(B),N_SPINP(f),N_SPINR(e),P-FLIGHT::QAR(D)+S(F),XP(f)
        • K(c);N_SPINP(f),N_SPINR(e),S_FLIGHT::QAB1(D)
      • Refutation
        • P(g);
  • Actual
    • R(E);
    • Threat
      • R(E)+S(F),XP(f)
    • Vars
      • K(c);N_PINB(B),N_SPINP(f),N_SPINR(e),S_FLIGHT::S(F)
      • K(c);N_SPINP(f),S_FLIGHT::QAB(D)
      • K(c);N_PINB(B),N_SPINP(f),N_SPINR(e),P-FLIGHT::R(E)+S(F),XP(f)
      • K(c);N_SPINP(f),N_SPINR(e),S_FLIGHT::QAB(D)+S(F),DCHECK,XP(g)
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