MESON Chess Problem Database

Problem Display
PID: 2266 (8/5R2/3Rpr2/1Q2rk2/7K/8/4P3/8 w - - 0 1)

Cook, Eugene Beauharnais

Source?, 0000

8/5R2/3Rpr2/1Q2rk2/7K/8/4P3/8

#2

5 + 4

1679 American Chess Nuts 1868

SOLUTION

  • SOUND
  • Tries
    • 1.Rxf6+?
      • 1...Ke4
        • 2.Qd3#
      • 1...Kxf6!
    • 1.Qd3+?
      • 1...Kf4
        • 2.Qf3#
      • 1...Re4+!
    • 1.Qxe5+?
      • 1...Kg6
        • 2.Qxf6#
        • 2.Qh5#
      • 1...Kxe5!
  • Keys
    • 1.Rxe6!
      • 1...Ke4
        • 2.Qxe5#
      • 1...Kf4
        • 2.Qxe5#
      • 1...Kxe6
        • 2.Qd7#
      • 1...Kg6
        • 2.Rexf6#
      • 1...Rxb5
        • 2.Rfxf6#
      • 1...Rxf7
        • 2.Qxe5#
      • 1...Rc5
        • 2.Rfxf6#
      • 1...Rd5
        • 2.Rfxf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(E);CHECK,XR(d)
      • Vars
        • K(b);N_SPINR(a),S_FLIGHT::QAB1(C)
      • Refutation
        • K(b);N_SPINR(a),P-FLIGHT,P_SPINP(c),XR(E)
    • Try
      • Q(C);CHECK,N_PINR(a),P_PINR(d)
      • Vars
        • K(b);P-FLIGHT::QAR1(C)
      • Refutation
        • R(a);CHECK,N_SPINR(d),P_SPINR(a)
    • Try
      • Q(C);CHECK,P_PINR(d),XR(a)
      • Refutation
        • K(b);N_SPINR(d),P-FLIGHT,XQ(C)
  • Actual
    • R(D);XP(c)
    • Vars
      • K(b);S_FLIGHT::QAR1(C),XR(a)
      • K(b);N_SPINR(a),P-FLIGHT,P_SPINR(d)::QAB1(C),XR(a)
      • K(b);N_SPINR(a),OGATEB,S_FLIGHT,XR(D)::QAB1(C)
      • K(b);N_SPINR(a),P_SPINR(d),S_FLIGHT::R1(D),XR(d)
      • R(a);N_SPINR(a),P_SPINR(d),XQ(C)::R1(E),XR(d)
      • R(d);XR(E)::QAR1(C),XR(a)
      • R(a);::R1(E),XR(d)
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