MESON Chess Problem Database

Problem Display
PID: 144009 (8/2p1Ppn1/n1Pr2N1/3k4/P3N1Q1/bP6/6B1/B5K1 w - - 0 1)

Thomson, Robert Gavin

Hackney Mercury, 1893

8/2p1Ppn1/n1Pr2N1/3k4/P3N1Q1/bP6/6B1/B5K1

#2

10 + 7

14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc6
      • 2.Sf4#
    • 1...Bc5+
      • 2.Sf2#
    • 1...Sc5
      • 2.Sc3#
      • 2.Sf6#
  • Tries
    • 1.Sxd6+?
      • 1...Kc5
        • 2.Qd4#
      • 1...Kxd6!
    • 1.Qf5+?
      • 1...Kxc6
        • 2.Qb5#
      • 1...Sxf5!
  • Keys
    • 1.Qe2!
      • threat
        • 2.Qc4#
      • 1...Bc5+
        • 2.Sf2#
      • 1...Kxc6
        • 2.Qb5#
      • 1...Ke6
        • 2.Sg3#
      • 1...Rxc6
        • 2.Sf4#
      • 1...Sc5
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(d);SBLOCK,XP(H)::S(I)
    • B(a);CHECK,SBLOCK::B(C)+S(F)
  • Tries
    • Try
      • S(F);CHECK,XR(d)
      • Vars
        • K(b);P-FLIGHT::QAB1(G)
      • Refutation
        • K(b);P-FLIGHT,XS(F)
    • Try
      • Q(G);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT,XP(H)::QAB1(G)
      • Refutation
        • S(g);XQ(G)
  • Actual
    • Q(G);
    • Threat
      • QAB1(G)
    • Vars
      • B(a);CHECK,SBLOCK::B(C)+S(F)
      • K(b);S_FLIGHT,XP(H)::QAB1(G)
      • K(b);S_FLIGHT::QAR(G)+S(F)
      • R(d);SBLOCK,XP(H)::S(I)
      • S(c);SBLOCK::B(C)+S(F),DCHECK
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