MESON Chess Problem Database

Problem Display
PID: 224537 (4RB2/b1p4p/2k3p1/P1N2p2/P2ppP2/7B/2P3Q1/6K1 w - - 0 1)

Anonymous

English Mechanic and World of Science, 1887

(First published on Fri Mar 18 1887)

4RB2/b1p4p/2k3p1/P1N2p2/P2ppP2/7B/2P3Q1/6K1

#2

10 + 8

6490 yacpdb 2020
15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Rxe4?
      • threat
        • 2.Re1#
        • 2.Re2#
        • 2.Re3#
        • 2.Rxd4#
        • 2.Re5#
        • 2.Re6#
        • 2.Re8#
      • 1...Bxc5
        • 2.Rxd4#
      • 1...fxe4
        • 2.Qxe4#
      • 1...d3
        • 2.Re1#
        • 2.Re2#
        • 2.Re3#
        • 2.Rb4#
        • 2.Rc4#
        • 2.Rd4#
        • 2.Re5#
        • 2.Re6#
        • 2.Re8#
      • 1...Kd5!
    • 1.Qxg6+?
      • 1...Kd5
        • 2.Qe6#
      • 1...hxg6!
  • Keys
    • 1.Sxe4!
      • threat
        • 2.Sc5#
        • 2.Sf6#
      • 1...d3+
        • 2.Sc5#
      • 1...Kd5
        • 2.Sd2#
      • 1...Kb7
        • 2.Sc5#
      • 1...Kd7
        • 2.Sf6#
      • 1...fxe4
        • 2.Qxe4#
      • 1...Bc5
        • 2.Sxc5#
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(I);XP(b)
      • Threat
        • DUALS(7)
      • Vars
        • B(f);XS(H)::QAB(C)+R(I),XP(a)
        • P(c);OGATE,P_SPINP(c),XR(I)::QAB(C),XP(c)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(C);CHECK,N_PINP(b),XP(e)
      • Vars
        • K(d);S_FLIGHT::QAB1(C)
      • Refutation
        • P(h);XQ(C)
  • Actual
    • S(H);XP(b)
    • Threat
      • DUALS(2)
    • Vars
      • P(a);CHECK::QAB(C)+S(H)
      • K(d);S_FLIGHT::QAB(C)+S(H)
      • K(d);S_FLIGHT::QAB(C)+S(H),DCHECK
      • K(d);P_SPINP(c),S_FLIGHT::S(H)
      • P(c);OGATE,P_SPINP(c),XS(H)::QAB(C),XP(c)
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).