MESON Chess Problem Database

Problem Display
PID: 143493 (4R3/8/1P1kp3/p7/QpK3P1/4P3/B7/8 w - - 0 1)

Clark, WA

British Chess Magazine, 1895

4R3/8/1P1kp3/p7/QpK3P1/4P3/B7/8

#2

7 + 4

SOLUTION

  • SOUND
  • Tries
    • 1.Qd1+?
      • 1...Ke5
        • 2.Qd4#
      • 1...Kc6!
    • 1.Qc6+?
      • 1...Ke5
        • 2.Rxe6#
        • 2.Qxe6#
      • 1...Kxc6!
    • 1.Qd7+?
      • 1...Ke5
        • 2.Rxe6#
        • 2.Qxe6#
        • 2.Qd4#
      • 1...Kxd7!
    • 1.b7?
      • threat
        • 2.b8Q#
        • 2.b8B#
      • 1...Kc7
        • 2.b8Q#
      • 1...b3
        • 2.b8Q#
        • 2.b8B#
      • 1...e5
        • 2.b8Q#
        • 2.b8B#
      • 1...Ke5!
  • Keys
    • 1.Kb5!
      • 1...Ke5
        • 2.Rxe6#
      • 1...Kd7
        • 2.Kc5#
      • 1...b3
        • 2.Qd4#
      • 1...e5
        • 2.Qd1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);P_SPINP(d),S_FLIGHT::QAB1(C)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Refutation
        • K(c);P-FLIGHT,XQ(C)
    • Try
      • Q(C);CHECK
      • Refutation
        • K(c);P-FLIGHT,XQ(C)
    • Try
      • P(F);
      • Threat
        • P=Q
      • Vars
        • K(c);S_FLIGHT::P=Q
        • P(a);::P=Q
        • P(d);::P=Q
      • Refutation
        • K(c);P_SPINP(d),S_FLIGHT
  • Actual
    • K(D);S_FLIGHT
    • Vars
      • K(c);P_SPINP(d),S_FLIGHT::R1(G),XP(d)
      • K(c);P-FLIGHT::QAB(C)+K(D)
      • P(a);OGATE::QAR2(C)
      • P(d);::QAR(C)
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