MESON Chess Problem Database

Problem Display
PID: 12387 (1Q2bR1N/4B1N1/q4b1p/p1R1n2r/2p2k1r/3P1B1P/5PP1/K7 w - - 0 1)

Gooderson, Arthur R

The Problemist, 1978

1Q2bR1N/4B1N1/q4b1p/p1R1n2r/2p2k1r/3P1B1P/5PP1/K7

#2

12 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Kg5
      • 2.Qxe5#
  • Tries
    • 1.Sxh5+?
      • 1...Kf5
        • 2.Rxe5#
        • 2.Qxe5#
      • 1...Kg5
        • 2.Rxe5#
        • 2.Qxe5#
      • 1...Bxh5
        • 2.Qxe5#
      • 1...Rxh5!
    • 1.Se6+?
      • 1...Kf5
        • 2.Rxe5#
        • 2.Rxf6#
        • 2.Qxe5#
      • 1...Qxe6!
    • 1.Rxc4+?
      • 1...Kg5
        • 2.Qxe5#
      • 1...Qxc4!
    • 1.Rxf6+?
      • 1...Kg5
        • 2.Rxe5#
        • 2.Rf5#
        • 2.Qxe5#
      • 1...Rf5
        • 2.Rxf5#
      • 1...Qxf6!
    • 1.g3+?
      • 1...Kg5
        • 2.Rxe5#
        • 2.Qxe5#
      • 1...Kxf3!
  • Keys
    • 1.Qb2!
      • threat
        • 2.Qc1#
        • 2.Qd2#
      • 1...Kg5
        • 2.Qxe5#
      • 1...Sxd3
        • 2.Qd4#
      • 1...Sxf3
        • 2.g3#
      • 1...cxd3
        • 2.Qd2#
      • 1...Sg4
        • 2.Qd4#
      • 1...Sc6
        • 2.Se6#
      • 1...Sg6
        • 2.Qd4#
      • 1...Sd7
        • 2.Qd4#
      • 1...Sf7
        • 2.Sg6#
      • 1...c3
        • 2.Qc1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAR2(J),XS(e)
  • Tries
    • Try
      • S(I);CHECK,XR(f)
      • Vars
        • B(j);XS(I)::QAB1(J),XS(e)
      • Refutation
        • R(c);XS(I)
    • Try
      • S(I);CHECK
      • Refutation
        • Q(g);XS(I)
    • Try
      • R(G);CHECK,XP(a)
      • Vars
        • K(b);N_SPINS(e),S_FLIGHT::QAR2(J),XS(e)
      • Refutation
        • Q(g);XR(G)
    • Try
      • R(K);CHECK,XB(h)
      • Vars
        • R(f);N_GUARD,P_SPINR(f)::R1(K),XR(f)
      • Refutation
        • Q(g);XR(K)
    • Try
      • P(C);CHECK
      • Refutation
        • K(b);N_SPINS(e),P-FLIGHT,XB(E)
  • Actual
    • Q(J);N_PINS(e)
    • Threat
      • DUALS(2)
    • Vars
      • K(b);P_SPINS(e),S_FLIGHT::QAR2(J),XS(e)
      • S(e);P_PINQ(J),XP(D)::QAR2(J)
      • S(e);P_PINQ(J),SBLOCK,XB(E)::P(C)
      • P(a);XP(D)::QAB(J)
      • S(e);P_PINQ(J)::QAR2(J)
      • S(e);P_PINQ(J),S_CUTQ(g)::S(I)
      • S(e);N_GUARD,N_SPINB(h),P_PINQ(J),S_CUTB(j)::S(L)
      • P(a);::QAB(J)
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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).