MESON Chess Problem Database

Problem Display
PID: 225158 (8/1KB5/5QP1/4Nb2/4PkB1/6n1/3P4/8 w - - 0 1)

Dobbs, Gilbert S

Chess Life, 1947

8/1KB5/5QP1/4Nb2/4PkB1/6n1/3P4/8

#2

8 + 3

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sf3+?
      • 1...Kxe4
        • 2.Qd4#
      • 1...Kxg4!
    • 1.Sc6+?
      • 1...Kxe4
        • 2.Qd4#
      • 1...Kxg4!
  • Keys
    • 1.Qh4!
      • threat
        • 2.Bxf5#
      • 1...Bxe4+
        • 2.Sc6#
      • 1...Bc8+
        • 2.Bxc8#
      • 1...Kxe4
        • 2.Bf3#
      • 1...Bxg4
        • 2.Qxg4#
      • 1...Bxg6
        • 2.Bd1#
        • 2.Be2#
        • 2.Bf3#
        • 2.Bh3#
        • 2.Bf5#
        • 2.Bh5#
        • 2.Be6#
        • 2.Bd7#
        • 2.Bc8#
      • 1...Sxe4
        • 2.Sd3#
      • 1...Be6
        • 2.Bf5#
        • 2.Bxe6#
      • 1...Bd7
        • 2.Bf5#
        • 2.Be6#
        • 2.Bxd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(b);N_SPINB(c),P-FLIGHT,XP(B)::QAR1(E)
      • Refutation
        • K(b);N_SPINB(c),P-FLIGHT,XB(C)
    • Try
      • S(D);CHECK
      • Vars
        • K(b);N_SPINB(c),P-FLIGHT,XP(B)::QAR1(E)
      • Refutation
        • K(b);N_SPINB(c),P-FLIGHT,XB(C)
  • Actual
    • Q(E);N_PINB(c)
    • Threat
      • QAR(E)+B(C),XB(c)
    • Vars
      • B(c);CHECK,SBLOCK,XP(B)::B(H)+S(D)
      • B(c);CHECK,OGATE::QAR(E)+B(C),XB(c)
      • K(b);P-FLIGHT,XP(B)::QAR(E)+B(C),DCHECK
      • B(c);OGATE,P_SPINB(c),XB(C)::QAR1(E),XB(c)
      • S(a);SBLOCK,XP(B)::B(H)+S(D),DCHECK
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