MESON Chess Problem Database

Problem Display
PID: 6363 (1Q1R1nB1/1N1P1r2/4q2r/1PNkB1R1/2pP2p1/2P5/3bKn2/8 w - - 0 1)

Adabashev, Mark Ivanovich

64 Shakhmatnoe obozrenie, 1929

1Q1R1nB1/1N1P1r2/4q2r/1PNkB1R1/2pP2p1/2P5/3bKn2/8

#2

12 + 9

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd7
      • 2.Bf4#
    • 1...Qxe5+
      • 2.Rxe5#
      • 2.Qxe5#
    • 1...Qa6
      • 2.Bf4#
    • 1...Qb6
      • 2.Bf4#
    • 1...Qc6
      • 2.Bf4#
    • 1...Rf3
      • 2.Qd6#
    • 1...Rf4
      • 2.Qd6#
    • 1...Rf5
      • 2.Qd6#
    • 1...Rf6
      • 2.Qd6#
    • 1...Re7
      • 2.Qd6#
    • 1...Rg7
      • 2.Qd6#
    • 1...Rh7
      • 2.Qd6#
  • Keys
    • 1.Qa8!
      • threat
        • 2.Sd6#
      • 1...Qxe5+
        • 2.Rxe5#
      • 1...Qxd7
        • 2.Bf4#
      • 1...Rxd7
        • 2.Sa5#
      • 1...Qa6
        • 2.Bf4#
      • 1...Qb6
        • 2.Bf4#
      • 1...Qc6
        • 2.Bf4#
      • 1...Qd6
        • 2.Sxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • Q(f);N_PINB(F),P_SPINQ(f),P_SPINR(h),XP(I)::R(G)+B(F)
    • Q(f);N_PINB(F),P_SPINR(h)::R(G)+B(F)
    • R(h);P_SPINQ(f)::QAR1(J)
  • Actual
    • Q(J);
    • Threat
      • QAB(J)+S(H)
    • Vars
      • Q(f);CHECK,OGATE,P_SPINQ(f),P_SPINR(h),XB(F)::R1(G),XQ(f)
      • Q(f);N_PINB(F),P_SPINQ(f),P_SPINR(h),XP(I)::R(G)+B(F)
      • R(h);P_SPINQ(f),P_SPINR(h),XP(I)::QAB(J)+S(H)
      • Q(f);N_PINB(F),P_SPINR(h)::R(G)+B(F)
      • Q(f);N_PINB(F),P_SPINR(h)::QAB(J)+S(H),XQ(f)
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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).