MESON Chess Problem Database

Problem Display
PID: 120694 (7R/B2p1K2/3P4/2rPk2B/8/Q2P4/2P3N1/8 w - - 0 1)

Phelps, Francis Bradley

Checkmate, 1901

7R/B2p1K2/3P4/2rPk2B/8/Q2P4/2P3N1/8

#2

10 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd5
      • 2.Qxc5#
  • Tries
    • 1.Re8+?
      • 1...Kd4
        • 2.Qxc5#
      • 1...Kxd5
        • 2.Qxc5#
      • 1...Kxd6
        • 2.Qxc5#
      • 1...Kf5!
  • Keys
    • 1.Bf3!
      • 1...Kd4
        • 2.Qb2#
        • 2.Qa1#
      • 1...Kf5
        • 2.Rh5#
      • 1...Kxd6
        • 2.Bb8#
      • 1...Rxc2
        • 2.Rh5#
      • 1...Rxd5
        • 2.Rh5#
      • 1...Rc3
        • 2.Rh5#
      • 1...Rc4
        • 2.Rh5#
      • 1...Ra5
        • 2.Rh5#
      • 1...Rb5
        • 2.Rh5#
      • 1...Rc6
        • 2.Rh5#
      • 1...Rc7
        • 2.Rh5#
      • 1...Rc8
        • 2.Rh5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 1
  • Sets
    • K(b);OGATEB,P-FLIGHT,XP(E)::QAR1(C),XR(a)
  • Tries
    • Try
      • R(J);CHECK
      • Vars
        • K(b);P_SPINR(a),S_FLIGHT::QAB1(C),XR(a)
        • K(b);P-FLIGHT,XP(E)::QAR1(C),XR(a)
        • K(b);P_SPINR(a),S_FLIGHT,XP(G)::QAB1(C),XR(a)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • B(F);
    • Vars
      • K(b);P-FLIGHT::R(J)
      • K(b);OGATEB,P_SPINR(a),S_FLIGHT,XP(G)::B(H)
      • R(a);XP(A)::R(J)
      • R(a);XP(E)::R(J)
      • R(a);::R(J)
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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).