MESON Chess Problem Database

Problem Display
PID: 164018 (2N5/3B2K1/2p4p/2rpk1P1/3N4/2PPb1P1/4Q2n/2B4q w - - 0 1)

Slavicek, Ivan

Die Schwalbe, 1965

2N5/3B2K1/2p4p/2rpk1P1/3N4/2PPb1P1/4Q2n/2B4q

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1
      • 2.Qxe3#
    • 1...Qf1
      • 2.Qxe3#
    • 1...Ra5
      • 2.Sxc6#
    • 1...Rb5
      • 2.Sxc6#
    • 1...Sf3
      • 2.Qxe3#
  • Tries
    • 1.Sf3+?
      • 1...Sxf3
        • 2.Qxe3#
      • 1...Qxf3!
    • 1.Qh5?
      • threat
        • 2.Qe8#
      • 1...Bxg5
        • 2.Bf4#
      • 1...Rxc3!
    • 1.Qf2?
      • threat
        • 2.Qf5#
        • 2.Qf6#
      • 1...Rxc3
        • 2.Qf6#
      • 1...Bxf2
        • 2.Bf4#
      • 1...Bxg5
        • 2.Qf5#
      • 1...Qe4
        • 2.Qf6#
      • 1...Qf1
        • 2.Qxe3#
      • 1...Bf4
        • 2.Bxf4#
        • 2.Qxf4#
        • 2.gxf4#
      • 1...Sf3
        • 2.Qxe3#
      • 1...Sg4
        • 2.Qf5#
      • 1...Qf3!
  • Keys
    • 1.Qb2!
      • threat
        • 2.Qb8#
      • 1...Rxc3
        • 2.Sxc6#
      • 1...Rb5
        • 2.Sxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • Q(a);N_GUARD::QAR2(B),XB(c)
    • R(d);N_GUARD::S(F),XP(g)
    • S(b);S_CUTQ(a)::QAR2(B),XB(c)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • S(b);XS(F)::QAR2(B),XB(c)
      • Refutation
        • Q(a);XS(F)
    • Try
      • Q(B);N_PINB(c)
      • Threat
        • QAR(B)
      • Vars
        • B(c);OGATE,P_SPINB(c),XP(G)::B(A)
      • Refutation
        • R(d);XP(C)
    • Try
      • Q(B);N_PINB(c)
      • Threat
        • DUALS(2)
      • Vars
        • R(d);XP(C)::QAB1(B)
        • B(c);OGATE,XQ(B)::B(A)
        • B(c);XP(G)::QAR1(B)
        • Q(a);::QAB1(B)
        • Q(a);N_GUARD::QAR2(B),XB(c)
        • S(b);S_CUTQ(a)::QAR2(B),XB(c)
        • S(b);::QAR1(B)
      • Refutation
        • Q(a);
  • Actual
    • Q(B);N_PINB(c)
    • Threat
      • QAB(B)
    • Vars
      • R(d);N_GUARD,XP(C)::S(F),XP(g)
      • R(d);N_GUARD::S(F),XP(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).