MESON Chess Problem Database

Problem Display
PID: 238172 (3K3B/3R1p1Q/4p3/2p2Np1/4k2P/N1P4B/q2b1P2/3R4 w - - 0 1)

Murashev, Pavel Aleksandrovich

Schach, 2008

3K3B/3R1p1Q/4p3/2p2Np1/4k2P/N1P4B/q2b1P2/3R4

#2

11 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bf4
      • 2.Bg2#
    • 1...exf5
      • 2.Qxf5#
  • Tries
    • 1.Sg3+?
      • 1...Kf4
        • 2.Rxf7#
        • 2.Qe4#
        • 2.Qxf7#
      • 1...Kf3!
    • 1.Sd4+?
      • 1...Kf4
        • 2.Rxf7#
      • 1...f5!
    • 1.Sd6+?
      • 1...Kf4
        • 2.Rxf7#
        • 2.Qe4#
        • 2.Qxf7#
      • 1...Kd5
        • 2.Bg2#
        • 2.Qe4#
      • 1...Kf3!
  • Keys
    • 1.Rxf7!
      • threat
        • 2.Se3#
        • 2.Se7#
      • 1...Qd5+
        • 2.Sd6#
      • 1...Kd3
        • 2.Sg3#
      • 1...Kf3
        • 2.Sd4#
      • 1...Kf4
        • 2.Se3#
        • 2.Sg3#
        • 2.Sd4#
        • 2.Sd6#
        • 2.Sh6#
        • 2.Se7#
      • 1...Kd5
        • 2.Bg2#
      • 1...exf5
        • 2.Qxf5#
      • 1...Be3
        • 2.Sxe3#
        • 2.Sg3#
        • 2.Sd6#
        • 2.Sh6#
        • 2.Se7#
      • 1...Bf4
        • 2.Bg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(b);SBLOCK::B(E)
    • P(f);OGATE,P_SPINP(f),XS(G)::QAB1(I),XP(f)
  • Tries
    • Try
      • S(G);CHECK
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(G);CHECK
      • Vars
        • K(c);P-FLIGHT::R(H),XP(g)
      • Refutation
        • P(g);P_SPINP(g)
    • Try
      • S(G);CHECK
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • R(H);XP(g)
    • Threat
      • DUALS(2)
    • Vars
      • Q(a);CHECK,SBLOCK::QAB(I)+S(G),DCHECK
      • K(c);P_SPINB(b),S_FLIGHT::QAB(I)+S(G)
      • K(c);S_FLIGHT::R(H)+S(G),DCHECK
      • K(c);P_SPINB(b),S_FLIGHT::B(E)
      • P(f);OGATE,P_SPINP(f),XS(G)::QAB1(I),XP(f)
      • B(b);SBLOCK::B(E)
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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).