MESON Chess Problem Database

Problem Display
PID: 270476 (4R3/7q/3p2b1/1P2r1Rr/1BPk1p2/2NP1P2/1K1QB3/8 w - - 0 1)

Simoni, Francesco

KobulChess, 2015

(First published on Sat Oct 17 2015)

4R3/7q/3p2b1/1P2r1Rr/1BPk1p2/2NP1P2/1K1QB3/8

#2

11 + 7

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe2
      • 2.Sxe2#
    • 1...Re4
      • 2.dxe4#
    • 1...Rxb5
      • 2.Sxb5#
    • 1...Rf5
      • 2.Re4#
    • 1...Be4
      • 2.dxe4#
  • Tries
    • 1.Sa4?
      • threat
        • 2.Bc3#
      • 1...Rxb5
        • 2.Qc3#
      • 1...Bxd3!
    • 1.Se4?
      • threat
        • 2.Bc3#
      • 1...Bxe4
        • 2.dxe4#
      • 1...Rxb5!
  • Keys
    • 1.Sd1!
      • threat
        • 2.Qc3#
      • 1...Rxe2
        • 2.Bc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • R(c);P_PINQ(B),XB(C)::S(D),XR(c)
    • R(c);OGATE::QAR(B)+P(E),XR(c)
    • R(c);P_PINB(G),XP(I)::S(D),XR(c)
    • R(c);OGATE::R1(K)
    • B(f);OGATE::QAR(B)+P(E),XB(f)
  • Tries
    • Try
      • S(D);
      • Threat
        • B(G)
      • Vars
        • R(c);P_PINB(G),XP(I)::QAB1(B)
      • Refutation
        • B(f);P_SPINB(f),XP(E)
    • Try
      • S(D);
      • Threat
        • B(G)
      • Vars
        • B(f);OGATE,XS(D)::QAR(B)+P(E),XB(f)
      • Refutation
        • R(c);P_PINB(G),XP(I)
  • Actual
    • S(D);
    • Threat
      • QAB1(B)
    • Vars
      • R(c);P_PINQ(B),XB(C)::B(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).