MESON Chess Problem Database

Problem Display
PID: 106815 (1R6/Q7/rb6/p7/k2N4/2KN4/2P5/5B2 w - - 0 1)

Pollock, WH

Baltimore Sunday News, 1889

1R6/Q7/rb6/p7/k2N4/2KN4/2P5/5B2

#2

7 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qxb6?
      • threat
        • 2.Qb3#
      • 1...Ka3
        • 2.Qb3#
      • 1...Rxb6!
    • 1.Qf7?
      • threat
        • 2.Qa2#
        • 2.Qb3#
      • 1...Ka3
        • 2.Qb3#
      • 1...Bc5
        • 2.Qb3#
      • 1...Bxd4+!
  • Keys
    • 1.Sb5!
      • threat
        • 2.Sb2#
      • 1...Bd4+
        • 2.Qxd4#
      • 1...Kxb5
        • 2.Qd7#

This is a version of 141369

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(F);XB(d)
      • Threat
        • QAB1(F)
      • Vars
        • K(a);P-FLIGHT::QAR1(F)
      • Refutation
        • R(c);XQ(F)
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT::QAR1(F)
        • B(d);::QAB1(F)
      • Refutation
        • B(d);CHECK,XS(E)
  • Actual
    • S(E);
    • Threat
      • S(D)
    • Vars
      • B(d);CHECK,OGATE::QAR(F),XB(d)
      • K(a);OGATEB,P_SPINB(d),S_FLIGHT,XS(E)::QAB(F)
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