MESON Chess Problem Database

Problem Display
PID: 287310 (n4Qq1/2p5/2P5/p1RN4/p1P1p3/k2pR3/B7/1K2B3 w - - 0 1)

Bowell, Gerald P

The Problemist, 1944

n4Qq1/2p5/2P5/p1RN4/p1P1p3/k2pR3/B7/1K2B3

#2

9 + 8

6490 yacpdb 2026

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd5
      • 2.Rxd5#
    • 1...Qg1
      • 2.Rxa5#
      • 2.Rb5#
    • 1...Qg2
      • 2.Rxa5#
      • 2.Rb5#
    • 1...Qg4
      • 2.Rxa5#
      • 2.Rb5#
  • Tries
    • 1.Sxc7?
      • threat
        • 2.Sb5#
      • 1...Qxc4
        • 2.Rxc4#
      • 1...Sxc7!
    • 1.Bxa5?
      • threat
        • 2.Bb4#
      • 1...Qxd5
        • 2.Rxd5#
      • 1...Qg1+!
  • Keys
    • 1.Sc3!
      • threat
        • 2.Sb5#
      • 1...Kb4
        • 2.Rb5#
      • 1...Qxc4
        • 2.Rxc4#
      • 1...d2
        • 2.Sd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • Q(h);OGATE,XS(G)::QAB(I)+R(F),XQ(h)
  • Tries
    • Try
      • S(G);XP(f)
      • Threat
        • S(G)
      • Vars
        • Q(h);OGATE,XP(E)::QAB(I)+R(F),XQ(h)
      • Refutation
        • S(g);XS(G)
    • Try
      • B(B);XP(e)
      • Threat
        • B(B)
      • Vars
        • Q(h);OGATE,XS(G)::QAB(I)+R(F),XQ(h)
      • Refutation
        • Q(h);CHECK
  • Actual
    • S(G);N_PINP(b)
    • Threat
      • S(G)
    • Vars
      • K(a);S_FLIGHT::QAB(I)+R(F),DCHECK
      • Q(h);OGATE,XP(E)::QAB(I)+R(F),XQ(h)
      • P(b);::R(D)+S(G)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).