MESON Chess Problem Database

Problem Display
PID: 226895 (5QK1/n7/r3kp2/4N1pp/b1Pp1pRq/1n4NB/8/2B1R3 w - - 0 1)

Ismile, Suratkal

The Problemist, 1987

5QK1/n7/r3kp2/4N1pp/b1Pp1pRq/1n4NB/8/2B1R3

#2

9 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rd6
      • 2.Qf7#
    • 1...Bd7
      • 2.Sd3#
      • 2.Sf3#
      • 2.Sc6#
      • 2.Sg6#
      • 2.Sf7#
  • Tries
    • 1.Kg7?
      • threat
        • 2.Qxf6#
      • 1...f5
        • 2.Qf6#
      • 1...fxe5!
    • 1.Sf5?
      • threat
        • 2.Sg7#
      • 1...Kxf5
        • 2.Rxf4#
      • 1...fxe5
        • 2.Qf7#
      • 1...Qxe1!
    • 1.Rxf4+?
      • 1...Qxh3
        • 2.Rxf6#
        • 2.Qxf6#
      • 1...Qg4
        • 2.Rxf6#
        • 2.Qxf6#
      • 1...f5
        • 2.Bxf5#
      • 1...g4!
    • 1.Rxh4+?
      • 1...f5
        • 2.Bxf5#
      • 1...g4!
    • 1.Qc8+?
      • 1...Kd6
        • 2.Sf5#
        • 2.Sf7#
      • 1...Ke7
        • 2.Sf5#
      • 1...Bd7
        • 2.Sf7#
        • 2.Qxd7#
      • 1...Sxc8!
  • Keys
    • 1.Se4!
      • threat
        • 2.Qxf6#
      • 1...Kxe5
        • 2.Sg3#
      • 1...Kf5
        • 2.Rxg5#
      • 1...fxe5
        • 2.Qf7#
      • 1...f5
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(h);SBLOCK::QAB1(H)
  • Tries
    • Try
      • K(I);P-FLIGHT
      • Threat
        • QAR1(H),XP(j)
      • Vars
        • P(j);::QAR1(H)
      • Refutation
        • P(j);P_SPINP(j),XS(G)
    • Try
      • S(C);
      • Threat
        • S(C)
      • Vars
        • K(i);OGATEB,P_SPINP(j),S_FLIGHT,XS(C)::B(D)+R(F),DCHECK,XP(d)
        • P(j);P_SPINP(j),XS(G)::QAB1(H)
      • Refutation
        • Q(e);XR(B)
    • Try
      • R(F);CHECK,XP(d)
      • Vars
        • P(j);P_SPINP(j)::B(D),XP(j)
      • Refutation
        • P(f);P_SPINP(f)
    • Try
      • R(F);CHECK,XQ(e)
      • Vars
        • P(j);P_SPINP(j)::B(D),XP(j)
      • Refutation
        • P(f);P_SPINP(f)
    • Try
      • Q(H);CHECK
      • Vars
        • K(i);P-FLIGHT::S(C)
      • Refutation
        • S(k);XQ(H)
  • Actual
    • S(C);
    • Threat
      • QAR1(H),XP(j)
    • Vars
      • K(i);P-FLIGHT,XS(G)::R(B)+S(C)
      • K(i);P_SPINP(j),S_FLIGHT::B(D)+R(F),DCHECK,XP(f)
      • P(j);SBLOCK,XS(G)::QAB1(H)
      • P(j);::QAR1(H)
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