MESON Chess Problem Database

Problem Display
PID: 89825 (1brN1N1K/6R1/5p2/R2pk2P/5p1Q/2prpP2/B3P2n/q1n5 w - - 0 1)

Gvozdjak, Peter

Die Schwalbe, 1985

1brN1N1K/6R1/5p2/R2pk2P/5p1Q/2prpP2/B3P2n/q1n5

#2

10 + 12

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Rxd5#
    • 1...Kd6
      • 2.Qxf6#
      • 2.Qxf4#
  • Tries
    • 1.Sf7+?
      • 1...Kd4
        • 2.Rxd5#
      • 1...Kf5!
    • 1.Sg6+?
      • 1...Kd4
        • 2.Rxd5#
      • 1...Kd6
        • 2.Qxf6#
        • 2.Qxf4#
      • 1...Kf5!
    • 1.Re7+?
      • 1...Kd4
        • 2.Rxd5#
      • 1...Kd6
        • 2.Qxf6#
      • 1...Kf5!
  • Keys
    • 1.Sd7+!
      • 1...Kd4
        • 2.Rxd5#
      • 1...Kf5
        • 2.Qxf6#
      • 1...Kd6
        • 2.Qxf4#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(i);N_SPINP(h),P_SPINP(g),S_FLIGHT::R1(E),XP(h)
  • Tries
    • Try
      • S(H);CHECK,P_SPINS(I)
      • Vars
        • K(i);N_SPINP(h),P_SPINP(g),S_FLIGHT::R1(E),XP(h)
      • Refutation
        • K(i);P-FLIGHT
    • Try
      • S(I);CHECK,P_SPINS(H)
      • Vars
        • K(i);N_SPINP(h),P_SPINP(g),S_FLIGHT::R1(E),XP(h)
      • Refutation
        • K(i);P-FLIGHT
    • Try
      • R(G);CHECK
      • Vars
        • K(i);N_SPINP(h),P_SPINP(g),S_FLIGHT::R1(E),XP(h)
        • K(i);N_SPINP(h),S_FLIGHT::QAR2(D),XP(j)
      • Refutation
        • K(i);P-FLIGHT
  • Actual
    • S(I);CHECK,P_SPINS(H)
    • Vars
      • K(i);N_SPINP(h),P_SPINP(g),S_FLIGHT::R1(E),XP(h)
      • K(i);P-FLIGHT::QAR1(D),XP(j)
      • K(i);N_SPINP(h),S_FLIGHT::QAB(D),XP(g)
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