MESON Chess Problem Database

Problem Display
PID: 63986 (3R1B2/2p5/R1b1k3/1p2N1P1/1pqP1K2/1N1p4/3P4/8 w - - 0 1)

Williams, Philip Hamilton

Chess Amateur (The), 1910

3R1B2/2p5/R1b1k3/1p2N1P1/1pqP1K2/1N1p4/3P4/8

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qxb3
      • 2.Rxc6#
    • 1...Qd5
      • 2.Re8#
    • 1...Qc1
      • 2.d5#
    • 1...Qc2
      • 2.d5#
    • 1...Qc3
      • 2.d5#
    • 1...Qxd4+
      • 2.Sxd4#
    • 1...Qc5
      • 2.Sxc5#
  • Tries
    • 1.Bc5?
      • threat
        • 2.Rxc6#
      • 1...Qxd4+
        • 2.Sxd4#
      • 1...Qd5
        • 2.Re8#
      • 1...Qxc5!
    • 1.Rd7?
      • 1...Qxd4+
        • 2.Sxd4#
      • 1...Qxb3
        • 2.Rxc6#
      • 1...Qc5
        • 2.Sxc5#
      • 1...Qc1
        • 2.d5#
      • 1...Qc2
        • 2.d5#
      • 1...Qc3
        • 2.d5#
      • 1...Qd5!
  • Keys
    • 1.Rb6!
      • 1...Qxd4+
        • 2.Sxd4#
      • 1...Qxb3
        • 2.Rxc6#
      • 1...cxb6
        • 2.Rd6#
      • 1...Qc5
        • 2.Sxc5#
      • 1...Qd5
        • 2.Re8#
      • 1...Qc1
        • 2.d5#
      • 1...Qc2
        • 2.d5#
      • 1...Qc3
        • 2.d5#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • Q(c);N_GUARD,N_PINP(C),XS(B)::R(G),XB(e)
    • Q(c);N_PINP(C),SBLOCK::R(H)
    • Q(c);N_PINP(C),P_PINP(A)::P(C)
    • Q(c);N_PINP(C)::P(C)
    • Q(c);CHECK,XP(C)::S(B),XQ(c)
    • Q(c);N_GUARD,N_PINP(C)::S(B),XQ(c)
  • Tries
    • Try
      • B(I);
      • Threat
        • R(G),XB(e)
      • Vars
        • Q(c);CHECK,XP(C)::S(B),XQ(c)
        • Q(c);N_PINP(C),SBLOCK::R(H)
      • Refutation
        • Q(c);N_PINP(C),XB(I)
    • Try
      • R(H);
      • Vars
        • Q(c);CHECK,XP(C)::S(B),XQ(c)
        • Q(c);N_GUARD,N_PINP(C),XS(B)::R(G),XB(e)
        • Q(c);N_GUARD,N_PINP(C)::S(B),XQ(c)
        • Q(c);N_PINP(C),P_PINP(A)::P(C)
        • Q(c);N_PINP(C)::P(C)
      • Refutation
        • Q(c);N_PINP(C)
  • Actual
    • R(G);
    • Vars
      • Q(c);CHECK,XP(C)::S(B),XQ(c)
      • Q(c);N_GUARD,N_PINP(C),XS(B)::R(G),XB(e)
      • P(g);N_GUARD,N_SPINB(e),XR(G)::R1(H)
      • Q(c);N_GUARD,N_PINP(C)::S(B),XQ(c)
      • Q(c);N_PINP(C),SBLOCK::R(H)
      • Q(c);N_PINP(C),P_PINP(A)::P(C)
      • Q(c);N_PINP(C)::P(C)
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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).