MESON Chess Problem Database

Problem Display
PID: 177976 (4NKRb/3p1Qn1/2p1p3/4p1Pp/qp3Bkr/6Nr/2BPR1Pp/8 w - - 0 1)

Slesarenko, Anatoly Vasilevich

Sahs (Latvia), 1986

4NKRb/3p1Qn1/2p1p3/4p1Pp/qp3Bkr/6Nr/2BPR1Pp/8

#2

11 + 13

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Be3?
      • threat
        • 2.Qf3#
      • 1...Kxg3
        • 2.Qf3#
      • 1...Rxg3
        • 2.Sf6#
      • 1...e4
        • 2.Qf4#
      • 1...Sf5!
    • 1.Bxe5?
      • threat
        • 2.Qf4#
      • 1...Kxg5
        • 2.Qg6#
      • 1...Sf5
        • 2.Re4#
      • 1...b3!
  • Keys
    • 1.Re4!
      • threat
        • 2.Sf6#
      • 1...Rxg3
        • 2.Be3#
      • 1...Sxe8
        • 2.Bxe5#
      • 1...exf4
        • 2.Qxf4#
      • 1...Sf5
        • 2.Bxe5#
      • 1...Qa8
        • 2.Bd1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(F);
      • Threat
        • QAB1(H)
      • Vars
        • K(e);P-FLIGHT,XS(E)::QAR1(H)
        • R(b);SBLOCK,XS(E)::S(I)
        • P(g);N_GUARD::QAR1(H)
      • Refutation
        • S(l);
    • Try
      • B(F);XP(g)
      • Threat
        • QAR1(H)
      • Vars
        • K(e);OGATEB,P-FLIGHT,P_SPINS(l),XP(G)::QAR1(H)
        • S(l);::R(C)
      • Refutation
        • P(d);
  • Actual
    • R(C);
    • Threat
      • S(I)
    • Vars
      • R(b);SBLOCK,XS(E)::R(C)+B(F)
      • S(l);XS(I)::R(C)+B(F),XP(g)
      • P(g);OGATE,P_SPINP(g),XB(F)::QAR1(H),XP(g)
      • S(l);::R(C)+B(F),XP(g)
      • Q(c);N_GUARD,P_PINS(I)::B(A)
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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).