MESON Chess Problem Database

Problem Display
PID: 173145 (8/2B2R2/8/RbNk2pp/3p4/5K2/4P1B1/1Q5n w - - 0 1)

Hamilton, Charles Dingee Pennock

Problem Observer, 2006

8/2B2R2/8/RbNk2pp/3p4/5K2/4P1B1/1Q5n

#2

8 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc5
      • 2.Qxb5#
    • 1...Bc4
      • 2.Qe4#
      • 2.Qb7#
    • 1...Bc6
      • 2.Qa2#
      • 2.Qb3#
  • Tries
    • 1.Rf5+?
      • 1...Kc4
        • 2.Qb3#
      • 1...Kc6!
    • 1.Qb3+?
      • 1...Kxc5
        • 2.Qxb5#
      • 1...Bc4
        • 2.Qb7#
      • 1...Kc6!
  • Keys
    • 1.Qxb5!
      • threat
        • 2.Rf5#
        • 2.Rd7#
      • 1...g4+
        • 2.Kf4#
      • 1...d3
        • 2.Ke3#
        • 2.Rd7#
      • 1...Sg3
        • 2.Kxg3#
        • 2.Rd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(d);OGATEB,P-FLIGHT,P_SPINB(c),XS(F)::QAR1(A),XB(c)
  • Tries
    • Try
      • R(H);CHECK
      • Vars
        • K(d);S_FLIGHT::QAB1(A)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(d);OGATEB,P-FLIGHT,P_SPINB(c),XS(F)::QAR1(A),XB(c)
        • B(c);OGATE,P_SPINB(c),SBLOCK::QAB(A)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • Q(A);XB(c)
    • Threat
      • DUALS(2)
    • Vars
      • P(e);CHECK::B(C)+K(D)
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