MESON Chess Problem Database

Problem Display
PID: 21004 (5n2/pn1b1RN1/3k1p2/2R5/3b4/Q1p1p3/6B1/4K3 w - - 0 1)

Heathcote, Godfrey

Good Companions (February), 1915

5n2/pn1b1RN1/3k1p2/2R5/3b4/Q1p1p3/6B1/4K3

#2

6 + 9

15 British Chess Magazine 1915
3132 The Good Companion Two-Mover 1922
3360 Simple Two-move Themes 1924
5454 Near Snap 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Be5
      • 2.Rc6#
    • 1...Bc6
      • 2.Rd5#
    • 1...Be6
      • 2.Se8#
    • 1...Se6
      • 2.Sf5#
  • Tries
    • 1.Sf5+?
      • 1...Ke6
        • 2.Re7#
        • 2.Qa2#
        • 2.Qb3#
      • 1...Bxf5!
    • 1.Se8+?
      • 1...Ke6
        • 2.Qa2#
        • 2.Qb3#
      • 1...Bxe8!
    • 1.Qa6+?
      • 1...Bc6
        • 2.Rd5#
        • 2.Qxc6#
      • 1...Kxc5!
  • Keys
    • 1.Qb4!
      • threat
        • 2.Qxd4#
      • 1...Bxc5
        • 2.Qf4#
      • 1...Sxc5
        • 2.Qb8#
      • 1...Be5
        • 2.Rc6#
      • 1...Bc6
        • 2.Rd5#
      • 1...Be6
        • 2.Se8#
      • 1...Se6
        • 2.Sf5#

This anticipates 593(1967)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(c);SBLOCK::QAB(C)+R(D),DCHECK
    • B(h);SBLOCK::QAB(C)+R(D),DCHECK
    • B(h);N_GUARD,SBLOCK::S(F)
    • S(i);SBLOCK,S_CUTB(h)::S(F)
  • Tries
    • Try
      • S(F);CHECK
      • Refutation
        • B(h);XS(F)
    • Try
      • S(F);CHECK
      • Refutation
        • B(h);XS(F)
    • Try
      • Q(C);CHECK
      • Refutation
        • K(d);S_FLIGHT,XR(D)
  • Actual
    • Q(C);
    • Threat
      • QAR2(C),XB(c)
    • Vars
      • B(c);OGATE,P_SPINB(c),SBLOCK,XR(D)::QAB(C)
      • S(g);OGATE,P_SPINS(g),SBLOCK,XR(D)::QAB(C)
      • B(c);SBLOCK::QAB(C)+R(D),DCHECK
      • B(h);SBLOCK::QAB(C)+R(D),DCHECK
      • B(h);N_GUARD,SBLOCK::S(F)
      • S(i);SBLOCK,S_CUTB(h)::S(F)
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Developed and maintained by Brian Stephenson.
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