MESON Chess Problem Database

Problem Display
PID: 2678 (8/8/8/2p5/1P2K3/RNk5/6Q1/b7 w - - 0 1)

Shinkman, William Anthony

Source?, 0000

8/8/8/2p5/1P2K3/RNk5/6Q1/b7

#2

5 + 3

3925 The Golden Argosy 1929

SOLUTION

  • SOUND
  • Sets
    • 1...c4
      • 2.Qd2#
  • Tries
    • 1.Kd5?
      • threat
        • 2.Qd2#
      • 1...Kd3
        • 2.Sxa1#
        • 2.Sc1#
        • 2.Sxc5#
        • 2.Qd2#
      • 1...Kxb4!
    • 1.Qg1?
      • 1...Kb2
        • 2.Qc1#
      • 1...Kc2
        • 2.Qc1#
      • 1...Kxb4
        • 2.Qxc5#
      • 1...Kc4
        • 2.Qxc5#
      • 1...cxb4
        • 2.Qc1#
      • 1...Bb2
        • 2.Qxc5#
      • 1...c4!
    • 1.Qc2+?
      • 1...Kxb4
        • 2.Qxc5#
      • 1...Kxc2!
    • 1.Qf2?
      • 1...Kxb4
        • 2.Qxc5#
      • 1...Kc4
        • 2.Qxc5#
      • 1...Bb2
        • 2.Qxc5#
      • 1...c4
        • 2.Qd2#
      • 1...cxb4!
  • Keys
    • 1.Qg5!
      • 1...Kb2
        • 2.Qc1#
      • 1...Kc2
        • 2.Qc1#
      • 1...Kxb4
        • 2.Qxc5#
      • 1...Kc4
        • 2.Qxc5#
      • 1...cxb4
        • 2.Qc1#
      • 1...Bb2
        • 2.Qxc5#
      • 1...c4
        • 2.Qd2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • P(c);SBLOCK::QAB1(A)
  • Tries
    • Try
      • K(E);S_FLIGHT
      • Threat
        • QAB1(A)
      • Refutation
        • K(b);S_FLIGHT,XP(D)
    • Try
      • Q(A);
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
        • K(b);P-FLIGHT::QAR1(A)
        • K(b);S_FLIGHT,XP(D)::QAB1(A),XP(c)
        • K(b);P-FLIGHT::QAR1(A),XP(c)
        • P(c);SBLOCK,XP(D)::QAR2(A)
        • B(a);SBLOCK::QAR2(A),XP(c)
      • Refutation
        • P(c);
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT,XP(D)::QAB1(A),XP(c)
      • Refutation
        • K(b);P-FLIGHT,XQ(A)
    • Try
      • Q(A);
      • Vars
        • K(b);S_FLIGHT,XP(D)::QAB1(A),XP(c)
        • K(b);P-FLIGHT::QAR1(A),XP(c)
        • B(a);SBLOCK::QAR2(A),XP(c)
        • P(c);SBLOCK::QAB1(A)
      • Refutation
        • P(c);XP(D)
  • Actual
    • Q(A);
    • Vars
      • K(b);S_FLIGHT::QAB1(A)
      • K(b);P-FLIGHT::QAR1(A)
      • K(b);S_FLIGHT,XP(D)::QAB1(A),XP(c)
      • K(b);P-FLIGHT::QAR1(A),XP(c)
      • P(c);SBLOCK,XP(D)::QAR2(A)
      • B(a);SBLOCK::QAR2(A),XP(c)
      • P(c);SBLOCK::QAB1(A)
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