MESON Chess Problem Database

Problem Display
PID: 30859 (B1b5/pn1p4/K2P4/2Bk1pN1/5P2/p1pN4/P1P2P2/1Q6 w - - 0 1)

Bennett, F?

The Westminster Papers, 1874

B1b5/pn1p4/K2P4/2Bk1pN1/5P2/p1pN4/P1P2P2/1Q6

#2

11 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Qb3#
    • 1...Kc6
      • 2.Qh1#
  • Tries
    • 1.Kb5?
      • threat
        • 2.Sb4#
        • 2.Qh1#
        • 2.Qb3#
      • 1...a5
        • 2.Qh1#
        • 2.Qb3#
      • 1...a6+!
    • 1.Kxa7?
      • 1...Kc4
        • 2.Qb3#
      • 1...Kc6!
    • 1.Sh3?
      • 1...Kc4
        • 2.Qb3#
      • 1...Ke4
        • 2.Qh1#
      • 1...Kc6
        • 2.Qh1#
      • 1...Ke6!
    • 1.Se4?
      • 1...Kc4
        • 2.Qb3#
      • 1...Kxe4
        • 2.Qh1#
      • 1...Kc6
        • 2.Sb4#
      • 1...Ke6
        • 2.Qb3#
      • 1...fxe4!
    • 1.Sf7?
      • 1...Kc4
        • 2.Qb3#
      • 1...Ke4
        • 2.Qh1#
      • 1...Kc6
        • 2.Qh1#
      • 1...Ke6!
    • 1.Bxb7+?
      • 1...Kc4
        • 2.Qb3#
        • 2.Qb4#
        • 2.Qb5#
      • 1...Bxb7+!
    • 1.Qa1?
      • 1...Kc6
        • 2.Qh1#
      • 1...Kc4!
    • 1.Qc1?
      • 1...Kc6
        • 2.Qh1#
      • 1...Kc4!
    • 1.Qd1?
      • 1...Kc6
        • 2.Qf3#
        • 2.Qh1#
      • 1...Kc4!
    • 1.Qe1?
      • 1...Kc6
        • 2.Qh1#
      • 1...Kc4!
    • 1.Qf1?
      • 1...Kc6
        • 2.Qg2#
        • 2.Qh1#
      • 1...Kc4!
    • 1.Qg1?
      • 1...Kc6
        • 2.Qh1#
        • 2.Qg2#
      • 1...Kc4!
    • 1.Qb6?
      • 1...Kc4
        • 2.Qb3#
      • 1...axb6!
    • 1.f3?
      • 1...Kc4
        • 2.Qb3#
      • 1...Kc6!
  • Keys
    • 1.Sh7!
      • 1...Kc4
        • 2.Qb3#
      • 1...Ke4
        • 2.Qh1#
      • 1...Kc6
        • 2.Qh1#
      • 1...Ke6
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);N_SPINS(f),S_FLIGHT::QAB1(A)
    • K(c);S_FLIGHT::QAB(A)
  • Tries
    • Try
      • K(I);S_FLIGHT
      • Threat
        • DUALS(3)
      • Refutation
        • P(e);CHECK
    • Try
      • K(I);P-FLIGHT,XP(e)
      • Vars
        • K(c);N_SPINS(f),S_FLIGHT::QAB1(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(H);
      • Vars
        • K(c);N_SPINS(f),S_FLIGHT::QAB1(A)
        • K(c);S_FLIGHT::QAB(A)
      • Refutation
        • K(c);N_SPINS(f),S_FLIGHT
    • Try
      • S(H);
      • Vars
        • K(c);N_SPINS(f),S_FLIGHT::QAB1(A)
        • K(c);OGATEB,S_FLIGHT,XS(H)::QAB(A)
        • K(c);S_FLIGHT::S(E)
        • K(c);N_SPINS(f),S_FLIGHT::QAB(A)
      • Refutation
        • P(d);XS(H)
    • Try
      • S(H);
      • Vars
        • K(c);N_SPINS(f),S_FLIGHT::QAB1(A)
        • K(c);S_FLIGHT::QAB(A)
      • Refutation
        • K(c);N_SPINS(f),S_FLIGHT
    • Try
      • B(K);CHECK,P_SPINB(K),XS(f)
      • Refutation
        • B(h);CHECK,XB(K)
    • Try
      • Q(A);
      • Vars
        • K(c);S_FLIGHT::QAB(A)
      • Refutation
        • K(c);N_SPINS(f),S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(c);S_FLIGHT::QAB(A)
      • Refutation
        • K(c);N_SPINS(f),S_FLIGHT
    • Try
      • Q(A);
      • Refutation
        • K(c);N_SPINS(f),S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(c);S_FLIGHT::QAB(A)
      • Refutation
        • K(c);N_SPINS(f),S_FLIGHT
    • Try
      • Q(A);
      • Refutation
        • K(c);N_SPINS(f),S_FLIGHT
    • Try
      • Q(A);
      • Refutation
        • K(c);N_SPINS(f),S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(c);N_SPINS(f),S_FLIGHT::QAB1(A)
      • Refutation
        • P(e);XQ(A)
    • Try
      • P(D);
      • Vars
        • K(c);N_SPINS(f),S_FLIGHT::QAB1(A)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • S(H);
    • Vars
      • K(c);N_SPINS(f),S_FLIGHT::QAB1(A)
      • K(c);S_FLIGHT::QAB(A)
      • K(c);N_SPINS(f),S_FLIGHT::QAB(A)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).