MESON Chess Problem Database

Problem Display
PID: 18178 (b1N5/7B/1Np2Q1B/1p2r3/p2k4/2r5/1P4p1/5nK1 w - - 0 1)

Woodward, LA

Time & Tide, 1953

b1N5/7B/1Np2Q1B/1p2r3/p2k4/2r5/1P4p1/5nK1

#2

7 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qd6#
  • Tries
    • 1.Qd8+?
      • 1...Kc5
        • 2.Qd6#
      • 1...Rd5!
    • 1.Qf4+?
      • 1...Re4
        • 2.Qd6#
      • 1...Kc5!
    • 1.bxc3+?
      • 1...Kc5
        • 2.Qxe5#
        • 2.Qd6#
      • 1...Kxc3!
  • Keys
    • 1.Bg7!
      • threat
        • 2.Qxe5#
      • 1...Ke3
        • 2.Qf2#
      • 1...Kc5
        • 2.Qd6#
      • 1...Re3
        • 2.Qd6#
      • 1...Rc5
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(e);N_SPINR(g),S_FLIGHT::QAB1(D)
  • Tries
    • Try
      • Q(D);CHECK,N_PINR(g)
      • Vars
        • K(e);S_FLIGHT::QAB1(D)
      • Refutation
        • R(g);P_SPINR(g)
    • Try
      • Q(D);CHECK,N_PINR(g)
      • Vars
        • R(g);OGATE,P_SPINR(g)::QAR2(D)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • P(B);CHECK,XR(c)
      • Refutation
        • K(e);S_FLIGHT,XP(B)
  • Actual
    • B(E);
    • Threat
      • QAB1(D),XR(g)
    • Vars
      • K(e);N_SPINR(g),S_FLIGHT::QAB1(D)
      • R(c);SBLOCK::QAR2(D)
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Developed and maintained by Brian Stephenson.
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