MESON Chess Problem Database

Problem Display
PID: 136518 (7B/4p1n1/1Q2p2r/4k1b1/1K4nR/R3p1N1/B7/8 w - - 0 1)

Djulinac, Stevan

Liga Problemista, 1988/2

7B/4p1n1/1Q2p2r/4k1b1/1K4nR/R3p1N1/B7/8

#2

7 + 8

6490 yacpdb 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Qxe3#
    • 1...Kf6
      • 2.Qxe6#
    • 1...Sf2
      • 2.Qd4#
    • 1...Sh2
      • 2.Qd4#
    • 1...Sf6
      • 2.Qd4#
      • 2.Qc7#
      • 2.Qb8#
  • Tries
    • 1.Kc3?
      • threat
        • 2.Qd4#
      • 1...Kf6
        • 2.Qxe6#
      • 1...Kf4!
    • 1.Kc4?
      • threat
        • 2.Qd4#
      • 1...Kf4
        • 2.Qxe3#
      • 1...Kf6!
    • 1.Rxe3+?
      • 1...Kf4
        • 2.Qd4#
      • 1...Kf6
        • 2.Qxe6#
      • 1...Sxe3
        • 2.Qd4#
      • 1...Bxe3!
    • 1.Ra5+?
      • 1...Kf6
        • 2.Qxe6#
      • 1...Kf4!
    • 1.Rxg4?
      • threat
        • 2.Qd4#
      • 1...Kf6
        • 2.Qxe6#
      • 1...Bf4!
    • 1.Qc5+?
      • 1...Kf4
        • 2.Qxe3#
      • 1...Kf6!
    • 1.Qc7+?
      • 1...Kd4
        • 2.Qc3#
        • 2.Qc5#
      • 1...Kf6!
    • 1.Qxe6+?
      • 1...Kd4
        • 2.Se2#
        • 2.Sf5#
        • 2.Qd5#
        • 2.Qe4#
      • 1...Kf4
        • 2.Qxe3#
      • 1...Rxe6!
  • Keys
    • 1.Rd3!
      • threat
        • 2.Qd4#
      • 1...Kf4
        • 2.Qxe3#
      • 1...Kf6
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • K(c);N_SPINS(h),P_SPINS(b),S_FLIGHT::QAB1(F),XP(a)
    • K(c);P_SPINP(e),S_FLIGHT::QAR1(F),XP(e)
    • S(b);::QAB1(F)
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Threat
        • QAB1(F)
      • Vars
        • K(c);P_SPINP(e),S_FLIGHT::QAR1(F),XP(e)
      • Refutation
        • K(c);N_SPINS(h),P_SPINS(b),S_FLIGHT
    • Try
      • K(D);P-FLIGHT
      • Threat
        • QAB1(F)
      • Vars
        • K(c);N_SPINS(h),P_SPINS(b),S_FLIGHT::QAB1(F),XP(a)
      • Refutation
        • K(c);P_SPINP(e),S_FLIGHT
    • Try
      • R(B);CHECK,XP(a)
      • Vars
        • K(c);N_SPINS(h),P_SPINS(b),S_FLIGHT::QAR2(F)
        • K(c);P_SPINP(e),S_FLIGHT::QAR1(F),XP(e)
        • S(b);XR(B)::QAB1(F)
      • Refutation
        • B(d);XR(B)
    • Try
      • R(B);CHECK
      • Vars
        • K(c);P_SPINP(e),S_FLIGHT::QAR1(F),XP(e)
      • Refutation
        • K(c);N_SPINS(h),P_SPINS(b),S_FLIGHT
    • Try
      • R(E);XS(b)
      • Threat
        • QAB1(F)
      • Vars
        • K(c);P_SPINP(e),S_FLIGHT::QAR1(F),XP(e)
      • Refutation
        • B(d);
    • Try
      • Q(F);CHECK
      • Vars
        • K(c);N_SPINS(h),P_SPINS(b),S_FLIGHT::QAB1(F),XP(a)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(F);CHECK,XP(e)
      • Vars
        • K(c);N_SPINS(h),OGATE,P_SPINS(b),S_FLIGHT::QAB1(F),XP(a)
      • Refutation
        • R(f);XQ(F)
  • Actual
    • R(B);
    • Threat
      • QAB1(F)
    • Vars
      • K(c);N_SPINS(h),P_SPINS(b),S_FLIGHT::QAB1(F),XP(a)
      • K(c);P_SPINP(e),S_FLIGHT::QAR1(F),XP(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).