MESON Chess Problem Database

Problem Display
PID: 145128 (1r3b2/2p2n2/1n6/3RP3/R2PkppP/1Q1N1p2/5P2/1K6 w - - 0 1)

McQueen, Eric Duncan

Weekly Scotsman, 1927

(First published on Sat Mar 26 1927)

1r3b2/2p2n2/1n6/3RP3/R2PkppP/1Q1N1p2/5P2/1K6

#2

9 + 9

14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Sxe5
      • 2.Rxe5#
  • Tries
    • 1.Sc5+?
      • 1...Kf5
        • 2.Qc2#
        • 2.Qd3#
      • 1...Bxc5!
  • Keys
    • 1.Qc2!
      • threat
        • 2.Sb4#
      • 1...Sxd5+
        • 2.Sb2#
      • 1...Kxd5
        • 2.Sxf4#
      • 1...Kf5
        • 2.Sc5#
      • 1...Sxe5
        • 2.Rxe5#
      • 1...Bb4
        • 2.Sxb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(g);OGATE,XP(I)::R1(H),XS(g)
  • Tries
    • Try
      • S(D);CHECK
      • Refutation
        • B(i);XS(D)
  • Actual
    • Q(C);
    • Threat
      • QAB(C)+S(D)
    • Vars
      • S(e);CHECK,SBLOCK,XR(H)::QAB(C)+S(D)
      • K(b);S_FLIGHT,XR(H)::S(D),XP(c)
      • K(b);S_FLIGHT::QAB(C)+S(D)
      • S(g);OGATE,XP(I)::R1(H),XS(g)
      • B(i);::QAB(C)+S(D),XB(i)
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