MESON Chess Problem Database

Problem Display
PID: 103516 (8/1p1K4/1p6/p7/kP6/B2Q4/3R4/8 w - - 0 1)

Chan, Ching

Toronto Globe, 1880

8/1p1K4/1p6/p7/kP6/B2Q4/3R4/8

#2

5 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Bc1?
      • 1...axb4
        • 2.Ra2#
      • 1...b5
        • 2.Qa3#
      • 1...Kxb4!
    • 1.Rb2?
      • 1...b5
        • 2.Qb3#
      • 1...axb4!
    • 1.Qc4?
      • 1...Kxa3
        • 2.Ra2#
      • 1...axb4
        • 2.Qxb4#
      • 1...b5!
  • Keys
    • 1.Ra2!
      • 1...axb4
        • 2.Bc1#
        • 2.Bb2#
      • 1...b5
        • 2.Qc2#
        • 2.Qd1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(B);
      • Vars
        • P(b);SBLOCK,XP(D)::R(A)
        • P(c);SBLOCK::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT,XP(D)
    • Try
      • R(A);
      • Vars
        • P(c);SBLOCK::QAB1(C)
      • Refutation
        • P(b);XP(D)
    • Try
      • Q(C);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XB(B)::R1(A)
        • P(b);OGATE,P_SPINP(b),XP(D)::QAR1(C),XP(b)
      • Refutation
        • P(c);
  • Actual
    • R(A);
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