MESON Chess Problem Database

Problem Display
PID: 56246 (4NK2/1q1P4/2n5/2P1kb1R/1N2p3/1BR1B1P1/2r5/Q4rb1 w - - 0 1)

Howard, Kenneth Samuel

British Chess Magazine, 1926

4NK2/1q1P4/2n5/2P1kb1R/1N2p3/1BR1B1P1/2r5/Q4rb1

#2

11 + 8

5089 The Enjoyment of Chess Problems 1943
14868 Pirnie Collection 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qa7
      • 2.Sxc6#
    • 1...Qb8
      • 2.Sxc6#
    • 1...Rf4
      • 2.gxf4#
  • Tries
    • 1.Bf4+?
      • 1...Kd4
        • 2.Sxc2#
        • 2.Rc4#
      • 1...Rxf4!
    • 1.Bh6?
      • threat
        • 2.Bg7#
      • 1...Bxc5+
        • 2.Rxc5#
      • 1...Kd4
        • 2.Rc4#
      • 1...e3
        • 2.Rxe3#
      • 1...Qxd7!
    • 1.Rxc2+?
      • 1...Sd4
        • 2.Qxd4#
      • 1...Rxa1!
  • Keys
    • 1.Bg5!
      • threat
        • 2.Bf6#
      • 1...Bxc5+
        • 2.Rxc5#
      • 1...Kd4
        • 2.Rc4#
      • 1...e3
        • 2.Rxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • Q(h);N_GUARD::S(F),XS(g)
    • Q(h);N_GUARD,P_PINS(J)::S(F),XS(g)
    • R(a);OGATE::P(E),XR(a)
  • Tries
    • Try
      • B(D);CHECK
      • Refutation
        • R(a);XB(D)
    • Try
      • B(D);
      • Threat
        • B(D)
      • Vars
        • B(b);CHECK,OGATE,XP(G)::QAB(A)+R(C),DCHECK,XB(b)
        • K(e);N_SPINB(f),S_FLIGHT::QAB(A)+R(C),DCHECK
        • P(d);::QAB(A)+R(C),DCHECK,XP(d)
      • Refutation
        • Q(h);XP(I)
    • Try
      • R(C);CHECK,XR(c)
      • Vars
        • S(g);N_GUARD,P_SPINS(g)::QAB1(A),XS(g)
      • Refutation
        • R(a);XQ(A)
  • Actual
    • B(D);N_PINB(f)
    • Threat
      • B(D)
    • Vars
      • B(b);CHECK,OGATE,XP(G)::QAB(A)+R(C),DCHECK,XB(b)
      • K(e);S_FLIGHT::QAB(A)+R(C),DCHECK
      • P(d);::QAB(A)+R(C),DCHECK,XP(d)
HTML5 logo

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).