MESON Chess Problem Database

Problem Display
PID: 169184 (5Q2/4p2N/2p1P1p1/2P2P2/pR1n1k1r/3K2R1/1BBP1N1P/6b1 w - - 0 1)

Murashev, Pavel Aleksandrovich

Permyakov, Evgeni Nikolaevich

3rd HM., SuperProblem 097. TT, 2013

5Q2/4p2N/2p1P1p1/2P2P2/pR1n1k1r/3K2R1/1BBP1N1P/6b1

#2

13 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...gxf5
      • 2.Qb8#
  • Tries
    • 1.Kxd4?
      • threat
        • 2.Kd3#
        • 2.Qb8#
        • 2.fxg6#
      • 1...Rxh2
        • 2.Qb8#
      • 1...Rxh7
        • 2.Kd3#
        • 2.Qb8#
      • 1...Bxh2
        • 2.Qb8#
      • 1...gxf5
        • 2.Kd3#
        • 2.Qxf5#
        • 2.Qb8#
      • 1...Rh5
        • 2.Kd3#
        • 2.Qb8#
      • 1...g5
        • 2.Kd3#
        • 2.Qb8#
      • 1...Bxf2+!
    • 1.Re3?
      • threat
        • 2.Rxd4#
        • 2.fxg6#
      • 1...Bxf2
        • 2.Rxd4#
      • 1...gxf5
        • 2.Rxd4#
        • 2.Qb8#
      • 1...Rh5
        • 2.Rxd4#
      • 1...g5
        • 2.Rxd4#
      • 1...Rxh7!
  • Keys
    • 1.Kc4!
      • threat
        • 2.Qb8#
      • 1...Ke5
        • 2.Qb8#
      • 1...Sxc2
        • 2.fxg6#
      • 1...Sxf5
        • 2.Kd3#
      • 1...Sxe6
        • 2.fxe6#
      • 1...Sf3
        • 2.fxg6#
      • 1...Sb5
        • 2.fxg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • P(g);P_SPINP(g),SBLOCK,XP(J)::QAB(M)
  • Tries
    • Try
      • K(F);P-FLIGHT,P_SPINS(D),XS(c)
      • Threat
        • DUALS(3)
      • Vars
        • R(e);XP(E)::QAB(M)
        • B(a);N_PINS(D),XP(E)::QAB(M)
      • Refutation
        • B(a);CHECK,XS(D)
    • Try
      • R(G);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);XS(D)::R(H),XS(c)
        • R(e);::R(H),XS(c)
        • P(g);::R(H),XS(c)
      • Refutation
        • R(e);XS(L)
  • Actual
    • K(F);N_PINS(c),S_FLIGHT
    • Threat
      • QAB(M)
    • Vars
      • K(d);P_SPINS(c),S_FLIGHT::QAB(M)
      • S(c);N_GUARD,XB(B)::QAR(M)+P(J),XP(g)
      • S(c);P_SPINS(c),XP(J)::R(H)+K(F)
      • S(c);OGATE,XP(K)::QAR(M)+P(J),XS(c)
      • S(c);N_GUARD::QAR(M)+P(J),XP(g)
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).