MESON Chess Problem Database

Problem Display
PID: 258342 (1Kb5/2Q5/1pR1PknP/1Np3pP/3r1bP1/3N4/3n4/B4R2 w - - 0 1)

Pique, Juan Ramon

Problemas, 2022

1Kb5/2Q5/1pR1PknP/1Np3pP/3r1bP1/3N4/3n4/B4R2

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Se5
      • 2.Qg7#
    • 1...Se7
      • 2.Qe5#
  • Tries
    • 1.Ka7?
      • threat
        • 2.Qf7#
        • 2.Qg7#
      • 1...Bxe6
        • 2.Qg7#
      • 1...Se5
        • 2.Qg7#
      • 1...Se7
        • 2.Qe5#
      • 1...Sh8
        • 2.Qd8#
        • 2.Qg7#
      • 1...Bd7!
    • 1.Kxc8?
      • threat
        • 2.Qf7#
        • 2.Qg7#
      • 1...Se5
        • 2.Qg7#
      • 1...Sh8
        • 2.Qd8#
        • 2.Qg7#
      • 1...Se7+!
    • 1.Sxf4?
      • threat
        • 2.Sd5#
        • 2.Qg7#
      • 1...Sxf4
        • 2.Qg7#
      • 1...Bd7
        • 2.Sd5#
      • 1...Se7
        • 2.Sd5#
      • 1...gxf4!
    • 1.Sd6?
      • threat
        • 2.Se8#
        • 2.Qf7#
      • 1...Kxe6
        • 2.Qf7#
      • 1...Bxe6
        • 2.Se8#
        • 2.Qg7#
      • 1...Se5
        • 2.Se8#
      • 1...Se7
        • 2.Se8#
      • 1...Sh8
        • 2.Se8#
      • 1...Bd7!
    • 1.Bxd4+?
      • 1...Se5
        • 2.Bxe5#
        • 2.Qd8#
        • 2.Qf7#
        • 2.Qg7#
      • 1...cxd4!
    • 1.Rxf4+?
      • 1...Sxf4
        • 2.Qd8#
        • 2.Qf7#
        • 2.Qg7#
      • 1...gxf4!
    • 1.e7+?
      • 1...Be6
        • 2.e8S#
      • 1...Kf7!
  • Keys
    • 1.Sc3!
      • threat
        • 2.Sd5#
      • 1...Rd6
        • 2.Qf7#
      • 1...Rd5
        • 2.Se4#
        • 2.Sxd5#
      • 1...Se5
        • 2.Qg7#
      • 1...Se7
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(h);N_PINQ(J),N_SPINR(b)::QAB1(J)
    • S(h);N_GUARD,SBLOCK::QAB1(J)
  • Tries
    • Try
      • K(K);N_SPINQ(J),S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • B(i);XP(H)::QAB1(J)
        • S(h);N_SPINR(b)::QAB1(J)
        • S(h);N_GUARD,SBLOCK::QAB1(J)
      • Refutation
        • B(i);
    • Try
      • K(K);N_SPINQ(J),P-FLIGHT,XB(i)
      • Threat
        • DUALS(2)
      • Vars
        • S(h);N_SPINR(b)::QAB1(J)
      • Refutation
        • S(h);CHECK
    • Try
      • S(C);N_SPINQ(J),XB(c)
      • Threat
        • DUALS(2)
      • Vars
        • S(h);P_SPINS(h),XS(C)::QAB1(J)
        • B(i);::R(B)+S(C),DCHECK
        • S(h);::R(B)+S(C),DCHECK
      • Refutation
        • P(e);P_SPINP(e),XS(C)
    • Try
      • S(E);N_SPINQ(J)
      • Threat
        • DUALS(2)
      • Vars
        • K(g);N_SPINB(c),N_SPINR(b),P-FLIGHT,XP(H)::QAB1(J)
        • S(h);N_SPINR(b)::S(E)
        • S(h);::S(E)
      • Refutation
        • B(i);
    • Try
      • B(A);CHECK,XR(b)
      • Refutation
        • P(d);XB(A)
    • Try
      • R(B);CHECK,N_SPINQ(J),XB(c)
      • Refutation
        • P(e);XR(B)
    • Try
      • P(H);CHECK
      • Vars
        • B(i);N_GUARD::P=S
      • Refutation
        • K(g);N_SPINR(b),P-FLIGHT
  • Actual
    • S(E);N_PINR(b)
    • Threat
      • S(E)
    • Vars
      • R(b);N_PINQ(J)::QAR1(J)
      • S(h);N_PINQ(J)::QAB1(J)
      • S(h);N_GUARD,SBLOCK::QAB1(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).