MESON Chess Problem Database

Problem Display
PID: 56256 (1K1R4/7p/B1kp2p1/B4p2/1P2n3/p1npN3/6Q1/b1R5 w - - 0 1)

Biscan, Dragutin

StrateGems, 2004

1K1R4/7p/B1kp2p1/B4p2/1P2n3/p1npN3/6Q1/b1R5

#2

8 + 10

SOLUTION

  • SOUND
  • Tries
    • 1.Qxe4+?
      • 1...d5
        • 2.Qxd5#
        • 2.Qe6#
        • 2.Qe8#
      • 1...fxe4!
    • 1.Qa2?
      • threat
        • 2.Qd5#
      • 1...Sf6
        • 2.Qc4#
      • 1...d5
        • 2.Qxd5#
      • 1...Sc5!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Rxd6#
      • 1...Kd5
        • 2.Rxd6#
      • 1...Sb5
        • 2.Bb7#
      • 1...Sd5
        • 2.Se5#
      • 1...d5
        • 2.Se5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);CHECK,XS(e)
      • Refutation
        • P(f);XQ(B)
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • S(e);N_GUARD::QAR2(B)
        • P(h);::QAB1(B),XP(h)
      • Refutation
        • S(e);N_SPINS(c)
  • Actual
    • S(C);N_PINS(c),P_PINS(e)
    • Threat
      • R1(H),XP(h)
    • Vars
      • K(g);P_SPINP(h),S_FLIGHT::R1(H),XP(h)
      • S(c);SBLOCK::B(F)
      • S(c);N_SPINS(e),SBLOCK::R(A)+S(C),DCHECK
      • P(h);N_GUARD,N_SPINS(e)::S(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).