MESON Chess Problem Database

Problem Display
PID: 2247 (2K5/8/4N3/QRp1rk1B/4NP2/4P3/2P5/8 w - - 0 1)

Cook, Eugene Beauharnais

Source?, 0000

2K5/8/4N3/QRp1rk1B/4NP2/4P3/2P5/8

#2

9 + 3

1679 American Chess Nuts 1868

SOLUTION

  • SOUND
  • Sets
    • 1...c4
      • 2.Rxe5#
  • Tries
    • 1.Sd4+?
      • 1...cxd4
        • 2.Rxe5#
      • 1...Kxe4!
    • 1.Qc3?
      • threat
        • 2.Qxe5#
      • 1...Kxe4
        • 2.Qxe5#
        • 2.Qd3#
      • 1...Kxe6
        • 2.Qxe5#
      • 1...Rxe4
        • 2.Sg7#
      • 1...Rxe6
        • 2.Sg3#
      • 1...Rd5!
    • 1.Qa1?
      • threat
        • 2.Qxe5#
      • 1...Kxe4
        • 2.Qxe5#
      • 1...Kxe6
        • 2.Qxe5#
      • 1...Rxe4
        • 2.Sg7#
      • 1...Rxe6
        • 2.Sg3#
      • 1...Rd5!
  • Keys
    • 1.Qd8!
      • 1...Kxe4
        • 2.Qd3#
      • 1...Kxe6
        • 2.Qd7#
      • 1...Rxe4
        • 2.Sg7#
      • 1...Rxe6
        • 2.Sg3#
      • 1...Rd5
        • 2.Qxd5#
      • 1...c4
        • 2.Rxe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • P(a);OGATE,P_SPINR(b)::R1(F),XR(b)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • P(a);OGATE,P_SPINR(b),XS(H)::R1(F),XR(b)
      • Refutation
        • K(c);S_FLIGHT,XS(C)
    • Try
      • Q(E);
      • Threat
        • QAR1(E),XR(b)
      • Vars
        • K(c);S_FLIGHT,XS(H)::QAR1(E),XR(b)
        • R(b);P_SPINP(a),SBLOCK,XS(C)::S(H)
        • R(b);P_SPINP(a),SBLOCK,XS(H)::S(C)
      • Refutation
        • R(b);
    • Try
      • Q(E);
      • Threat
        • QAR1(E),XR(b)
      • Vars
        • K(c);S_FLIGHT,XS(C)::QAR1(E),XR(b)
        • K(c);S_FLIGHT,XS(H)::QAR1(E),XR(b)
        • R(b);P_SPINP(a),SBLOCK,XS(C)::S(H)
        • R(b);P_SPINP(a),SBLOCK,XS(H)::S(C)
      • Refutation
        • R(b);
  • Actual
    • Q(E);
    • Vars
      • K(c);OGATEB,S_FLIGHT,XS(C)::QAB1(E)
      • K(c);OGATEB,S_FLIGHT,XS(H)::QAB1(E)
      • R(b);P_SPINP(a),SBLOCK,XS(C)::S(H)
      • R(b);P_SPINP(a),SBLOCK,XS(H)::S(C)
      • R(b);OGATEB::QAR2(E),XR(b)
      • P(a);OGATE,P_SPINR(b)::R1(F),XR(b)
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