MESON Chess Problem Database

Problem Display
PID: 140556 (2K2BBQ/4Rb2/1p6/1P1kr3/1P3b2/1P2R3/8/5N2 w - - 0 1)

Bridgwater, Ralph Herbert

The Problemist, 1943

2K2BBQ/4Rb2/1p6/1P1kr3/1P3b2/1P2R3/8/5N2

#2

10 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.R7xe5#
    • 1...Rf5
      • 2.Rd3#
    • 1...Rg5
      • 2.Rd3#
    • 1...Rh5
      • 2.Rd3#
    • 1...Bxe3
      • 2.Qxe5#
    • 1...Bg5
      • 2.Qxe5#
    • 1...Bh6
      • 2.Qxe5#
    • 1...Be6+
      • 2.Rd7#
  • Tries
    • 1.Bxf7+?
      • 1...Kd4
        • 2.Rd7#
      • 1...Kd6
        • 2.R7xe5#
        • 2.Rd7#
      • 1...Re6!
    • 1.R3xe5+?
      • 1...Kd6
        • 2.R7e6#
        • 2.Ra7#
        • 2.Rb7#
        • 2.Rc7#
        • 2.Rd7#
        • 2.Rxf7#
        • 2.Re8#
      • 1...Bxe5
        • 2.Qxe5#
      • 1...Kd4!
    • 1.R7xe5+?
      • 1...Bxe5
        • 2.Qxe5#
      • 1...Kd4!
    • 1.Qh1+?
      • 1...Kd6
        • 2.R7xe5#
        • 2.Qc6#
      • 1...Re4
        • 2.Rd3#
      • 1...Kd4!
  • Keys
    • 1.Qh5!
      • threat
        • 2.Qd1#
      • 1...Be6+
        • 2.Rd7#
      • 1...Kd4
        • 2.Qd1#
      • 1...Kd6
        • 2.R7xe5#
      • 1...Rxh5
        • 2.Rd3#
      • 1...Bxe3
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • K(b);N_SPINB(e),P-FLIGHT::B(H)+R(F),XR(c)
    • R(c);::R(C)
    • B(a);N_GUARD,XR(C)::QAR1(J),XR(c)
    • B(a);N_GUARD::QAR1(J),XR(c)
    • B(e);CHECK::R(F)
  • Tries
    • Try
      • B(I);CHECK,XB(e)
      • Vars
        • K(b);P-FLIGHT,P_SPINR(c)::R(F)
      • Refutation
        • R(c);P_SPINR(c)
    • Try
      • R(C);CHECK,XR(c)
      • Vars
        • B(a);OGATE,XR(C)::QAR1(J),XB(a)
      • Refutation
        • K(b);N_SPINB(e),P-FLIGHT
    • Try
      • R(F);CHECK,XR(c)
      • Vars
        • B(a);OGATE,XR(F)::QAR1(J),XB(a)
      • Refutation
        • K(b);N_SPINB(e),P-FLIGHT
    • Try
      • Q(J);CHECK
      • Vars
        • R(c);P_SPINR(c)::R(C)
      • Refutation
        • K(b);N_SPINB(e),P-FLIGHT
  • Actual
    • Q(J);P_PINR(c)
    • Threat
      • QAR(J)
    • Vars
      • B(e);CHECK::R(F)
      • K(b);N_SPINB(e),N_SPINR(c),P-FLIGHT::QAR(J)
      • K(b);N_SPINB(e),N_SPINR(c),P-FLIGHT::B(H)+R(F),XR(c)
      • R(c);N_SPINR(c),XQ(J)::R(C)
      • B(a);N_GUARD,XR(C)::QAR1(J),XR(c)
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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).