MESON Chess Problem Database

Problem Display
PID: 99573 (2B2B2/2P3pK/Rn2r1N1/3k4/rRq4n/4P3/8/4NQ2 w - - 0 1)

Talaber, Laszlo

Pest megyei Sakkszovetseg, 1965

2B2B2/2P3pK/Rn2r1N1/3k4/rRq4n/4P3/8/4NQ2

#2

10 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qd3#
    • 1...Kc6
      • 2.Qxc4#
    • 1...Qa2
      • 2.Qb5#
    • 1...Qb3
      • 2.Qb5#
    • 1...Qb5
      • 2.Qxb5#
    • 1...Qe4
      • 2.Qb5#
    • 1...Qf4
      • 2.Qb5#
    • 1...Qg4
      • 2.Qb5#
    • 1...Qc6
      • 2.Qd3#
    • 1...Sd7
      • 2.Qxc4#
    • 1...Sa8
      • 2.Qxc4#
    • 1...Sxc8
      • 2.Qxc4#
  • Tries
    • 1.Bxe6+?
      • 1...Ke4
        • 2.Qd3#
        • 2.Qf4#
      • 1...Kc6
        • 2.c8Q#
      • 1...Kxe6!
    • 1.Bb7+?
      • 1...Qc6
        • 2.Qd3#
        • 2.Qb5#
      • 1...Rc6!
    • 1.e4+?
      • 1...Kd4
        • 2.Qd3#
      • 1...Kxe4
        • 2.Qd3#
      • 1...Kc6
        • 2.Qxc4#
      • 1...Qxe4
        • 2.Qb5#
      • 1...Rxe4!
  • Keys
    • 1.Qf7!
      • threat
        • 2.Qxe6#
      • 1...Ke4
        • 2.Qxe6#
      • 1...Kc6
        • 2.Qd7#
      • 1...Qe4
        • 2.Bb7#
      • 1...Qg4
        • 2.Bb7#
      • 1...Qc6
        • 2.e4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 5
    • ADDED MATES = 0
    • REMOVED MATES = 7
  • Sets
    • K(d);P_SPINQ(b),S_FLIGHT::QAB1(B)
    • K(d);P_SPINS(e),S_FLIGHT::QAR2(B),XQ(b)
    • Q(b);OGATE::QAR2(B)
    • Q(b);OGATE::QAR2(B),XQ(b)
    • Q(b);OGATE,P_PINS(F)::QAR2(B)
    • Q(b);N_GUARD,SBLOCK::QAR2(B)
    • S(e);N_GUARD::QAB1(B),XQ(b)
    • S(e);N_GUARD,XB(I)::QAB1(B),XQ(b)
  • Tries
    • Try
      • B(I);CHECK,XR(f)
      • Vars
        • K(d);P_SPINS(e),S_FLIGHT::P=Q
      • Refutation
        • K(d);P_SPINS(e),S_FLIGHT,XB(I)
    • Try
      • B(I);CHECK
      • Refutation
        • R(f);P_SPINR(f)
    • Try
      • P(C);CHECK
      • Vars
        • K(d);P-FLIGHT,P_SPINQ(b)::QAR1(B)
        • K(d);P_SPINQ(b),S_FLIGHT,XP(C)::QAB1(B)
        • K(d);P_SPINS(e),S_FLIGHT::QAR2(B),XQ(b)
        • Q(b);OGATE,P_PINS(F),XP(C)::QAR2(B)
      • Refutation
        • R(f);XP(C)
  • Actual
    • Q(B);P_PINR(f)
    • Threat
      • QAB1(B),XR(f)
    • Vars
      • K(d);N_SPINR(f),P_SPINQ(b),S_FLIGHT::QAR2(B),XR(f)
      • K(d);N_SPINR(f),P_SPINS(e),S_FLIGHT::QAB1(B)
      • Q(b);N_GUARD,P_PINS(F)::B(I)
      • Q(b);N_GUARD::B(I)
      • Q(b);N_GUARD,SBLOCK::P(C)
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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).