MESON Chess Problem Database

Problem Display
PID: 65943 (8/6K1/2p1p3/Q1B1kp2/3pp3/7R/8/3R4 w - - 0 1)

Ahlbom, [Adolf] Leonard

British Chess Magazine, 1889

8/6K1/2p1p3/Q1B1kp2/3pp3/7R/8/3R4

#2

5 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...f4
      • 2.Rh5#
  • Tries
    • 1.Bxd4+?
      • 1...Kd6
        • 2.Bf6#
        • 2.Qd8#
      • 1...Kf4!
    • 1.Rxd4?
      • threat
        • 2.Qc7#
      • 1...f4
        • 2.Rh5#
      • 1...Kf4!
    • 1.Qd2?
      • 1...Kd5
        • 2.Qxd4#
      • 1...e3
        • 2.Qxd4#
      • 1...f4
        • 2.Rh5#
      • 1...d3!
    • 1.Qd8?
      • threat
        • 2.Qd6#
      • 1...e3
        • 2.Qxd4#
      • 1...f4
        • 2.Rh5#
        • 2.Qg5#
      • 1...Kf4!
    • 1.Qa1?
      • 1...Kd5
        • 2.Qxd4#
      • 1...e3
        • 2.Qxd4#
      • 1...f4
        • 2.Rh5#
      • 1...Kf4!
  • Keys
    • 1.Qc3!
      • 1...Kf4
        • 2.Qg3#
      • 1...Kd5
        • 2.Qxd4#
      • 1...dxc3
        • 2.Bd6#
      • 1...e3
        • 2.Qxd4#
      • 1...f4
        • 2.Rh5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(d);OGATEB,SBLOCK::R(B)
  • Tries
    • Try
      • B(D);CHECK,XP(a)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(A);XP(a)
      • Threat
        • QAB(C)
      • Vars
        • P(d);OGATEB,SBLOCK::R(B)
      • Refutation
        • K(c);P_SPINP(b),S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(c);P-FLIGHT,P_SPINP(a)::QAR1(C),XP(a)
        • P(b);::QAB1(C),XP(a)
        • P(d);OGATEB::R(B)
      • Refutation
        • P(a);
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • P(b);::QAB1(C),XP(a)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(C);P_PINP(a)
      • Vars
        • K(c);P-FLIGHT::QAR1(C),XP(a)
        • P(b);::QAB1(C),XP(a)
        • P(d);OGATEB,SBLOCK::R(B)
      • Refutation
        • K(c);N_SPINP(a),S_FLIGHT
  • Actual
    • Q(C);P_PINP(a)
    • Vars
      • K(c);N_SPINP(a),S_FLIGHT::QAB1(C)
      • K(c);P-FLIGHT::QAR1(C),XP(a)
      • P(a);N_SPINP(a),XQ(C)::B(D)
      • P(b);::QAB1(C),XP(a)
      • P(d);OGATEB,SBLOCK::R(B)
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