MESON Chess Problem Database

Problem Display
PID: 143630 (5B2/2p5/K2p3R/1N1kP3/2N5/1Q3r2/6B1/8 w - - 0 1)

Clark, WA

British Chess Magazine, 1896

5B2/2p5/K2p3R/1N1kP3/2N5/1Q3r2/6B1/8

#2

8 + 4

5454 Near Snap 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qxf3#
    • 1...dxe5
      • 2.Sd2#
      • 2.Qd3#
    • 1...c5
      • 2.Bxf3#
  • Tries
    • 1.Qxf3+?
      • 1...Kxc4
        • 2.Qc3#
      • 1...Kc5!
  • Keys
    • 1.Qc3!
      • 1...Ke4
        • 2.Qxf3#
      • 1...Kc5
        • 2.Se3#
      • 1...Kc6
        • 2.Sb6#
      • 1...dxe5
        • 2.Qd3#
      • 1...c6
        • 2.Qd4#
      • 1...c5
        • 2.Bxf3#

This anticipates 16405(1940)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAB1(B),XR(a)
    • P(d);SBLOCK::B(A),XR(a)
  • Tries
    • Try
      • Q(B);CHECK,XR(a)
      • Vars
        • K(b);S_FLIGHT,XS(C)::QAR1(B)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(c)
  • Actual
    • Q(B);
    • Vars
      • K(b);S_FLIGHT::QAB1(B),XR(a)
      • K(b);N_SPINR(a),P-FLIGHT,P_SPINP(c)::QAR(B)+S(C)
      • K(b);P_SPINP(c),S_FLIGHT::QAR(B)+S(C)
      • P(c);XP(E)::QAR2(B)
      • P(d);SBLOCK::QAR1(B)
      • P(d);SBLOCK::B(A),XR(a)
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