MESON Chess Problem Database

Problem Display
PID: 158344 (3N4/8/1K3pp1/1Q6/3pk1b1/2p2pB1/2P5/8 w - - 0 1)

Todd, William R

British Chess Magazine 13. Ty., 1906-1907

3N4/8/1K3pp1/1Q6/3pk1b1/2p2pB1/2P5/8

#2

5 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Qd3#
    • 1...d3
      • 2.Qxd3#
    • 1...f5
      • 2.Qe5#
  • Tries
    • 1.Kc6?
      • threat
        • 2.Qd3#
      • 1...Ke3
        • 2.Qd3#
      • 1...d3
        • 2.Qxd3#
      • 1...Bd7+!
    • 1.Qc6+?
      • 1...Kf5
        • 2.Qd5#
      • 1...Ke3!
    • 1.Qe8+?
      • 1...Kd5
        • 2.Qc6#
      • 1...Be6
        • 2.Qxe6#
      • 1...Kf5!
  • Keys
    • 1.Kc5!
      • threat
        • 2.Qd3#
      • 1...Ke3
        • 2.Qd3#
      • 1...Kf5
        • 2.Kxd4#
      • 1...d3
        • 2.Qxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(d);P-FLIGHT::QAR1(C)
    • P(c);::QAB1(C),XP(c)
    • P(f);N_GUARD::QAR1(C)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Threat
        • QAB1(C)
      • Vars
        • K(d);P-FLIGHT::QAR1(C)
        • P(c);::QAB1(C),XP(c)
      • Refutation
        • B(e);CHECK
    • Try
      • Q(C);CHECK
      • Vars
        • K(d);S_FLIGHT::QAR2(C)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(d);S_FLIGHT::QAB1(C)
        • B(e);N_GUARD,P_SPINB(e)::QAR2(C),XB(e)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • K(D);S_FLIGHT
    • Threat
      • QAB1(C)
    • Vars
      • K(d);P-FLIGHT::QAR1(C)
      • K(d);S_FLIGHT::QAR(C)+K(D),XP(c)
      • P(c);::QAB1(C),XP(c)
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