MESON Chess Problem Database

Problem Display
PID: 166867 (3R4/2B1Kpr1/2p1pP2/1PP3Pp/2BNk2P/r2bP2Q/2p1R1p1/1n2n3 w - - 0 1)

Bakcsi, Gyorgy

Sachove umeni (Ceskoslovensky sach), 1959

3R4/2B1Kpr1/2p1pP2/1PP3Pp/2BNk2P/r2bP2Q/2p1R1p1/1n2n3

#2

13 + 12

15148 Sadier Collection 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sf3
      • 2.Qxf3#
    • 1...e5
      • 2.Qf5#
  • Tries
    • 1.Sb3?
      • threat
        • 2.Rd4#
      • 1...Sf3
        • 2.Bxd3#
      • 1...e5!
    • 1.Sxc6?
      • threat
        • 2.Rd4#
      • 1...e5
        • 2.Bd5#
      • 1...Sf3!
    • 1.Bd5+?
      • 1...exd5
        • 2.Qf5#
      • 1...cxd5!
    • 1.Qxg2+?
      • 1...Sf3
        • 2.Qxf3#
      • 1...Sxg2!
    • 1.Qh2?
      • threat
        • 2.Qf4#
        • 2.Qe5#
      • 1...Rxg5
        • 2.Qf4#
      • 1...Sf3
        • 2.Qf4#
      • 1...e5
        • 2.Qxe5#
      • 1...Bxc4!
    • 1.Qg3?
      • threat
        • 2.Qf4#
        • 2.Qe5#
      • 1...Rxg5
        • 2.Qf4#
      • 1...Sf3
        • 2.Qf4#
        • 2.Qxf3#
      • 1...e5
        • 2.Qxe5#
      • 1...Bxc4!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Rd4#
      • 1...Sf3
        • 2.Sg3#
      • 1...e5
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(b);N_GUARD::QAB1(C),XS(b)
    • P(j);N_GUARD::QAB1(C)
  • Tries
    • Try
      • S(E);
      • Threat
        • R1(M)
      • Vars
        • S(b);N_GUARD::B(D),XB(f)
      • Refutation
        • P(j);
    • Try
      • S(E);XP(i)
      • Threat
        • R1(M)
      • Vars
        • P(j);N_GUARD::B(D)
      • Refutation
        • S(b);
    • Try
      • B(D);CHECK
      • Vars
        • P(j);XB(D)::QAB1(C)
      • Refutation
        • P(i);XB(D)
    • Try
      • Q(C);CHECK,XP(d)
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAB1(C),XS(b)
      • Refutation
        • S(b);XQ(C)
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • R(l);XP(I)::QAR1(C)
        • S(b);::QAR1(C)
        • P(j);::QAR1(C),XP(j)
      • Refutation
        • B(f);XB(D)
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • R(l);XP(I)::QAR1(C)
        • P(j);::QAR1(C),XP(j)
      • Refutation
        • B(f);XB(D)
  • Actual
    • S(E);
    • Threat
      • R1(M)
    • Vars
      • S(b);SBLOCK::S(E)
      • P(j);SBLOCK::S(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).