MESON Chess Problem Database

Problem Display
PID: 45479 (8/b7/3r2p1/q1n1P1Q1/1nP1k1BK/r4N2/8/1b1R2B1 w - - 0 1)

Wallis, Walter Warren

6th Comm., BCF 051. Ty., 1945-1946

8/b7/3r2p1/q1n1P1Q1/1nP1k1BK/r4N2/8/1b1R2B1

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Qe3#
    • 1...Ra2
      • 2.Qe3#
    • 1...Re3
      • 2.Qxe3#
    • 1...Ra4
      • 2.Qe3#
    • 1...Rd4
      • 2.Rxd4#
    • 1...Ra6
      • 2.Rd4#
    • 1...Rb6
      • 2.Rd4#
    • 1...Rc6
      • 2.Rd4#
    • 1...Re6
      • 2.Rd4#
    • 1...Rf6
      • 2.Rd4#
    • 1...Bd3
      • 2.Sd2#
      • 2.Qe3#
    • 1...Sbd3
      • 2.Qe3#
    • 1...Sd5
      • 2.Rd4#
    • 1...Scd3
      • 2.Sd2#
  • Tries
    • 1.Bf5+?
      • 1...Kxf3
        • 2.Qg4#
      • 1...gxf5!
    • 1.Re1+?
      • 1...Re3
        • 2.Rxe3#
        • 2.Qxe3#
      • 1...Kd3!
    • 1.Qxg6+?
      • 1...Rxg6
        • 2.Rd4#
      • 1...Kf4!
  • Keys
    • 1.Kg3!
      • threat
        • 2.Qf4#
      • 1...Rxf3+
        • 2.Bxf3#
      • 1...Rxd1
        • 2.Qxg6#
      • 1...Rd2
        • 2.Qxg6#
      • 1...Rf6
        • 2.Rd4#
      • 1...Sbd3
        • 2.Qe3#
      • 1...Sd5
        • 2.Rd4#
      • 1...Scd3
        • 2.Sd2#
      • 1...Se6
        • 2.Qxg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 9
  • Sets
    • R(b);N_GUARD::QAR1(H)
    • R(b);N_GUARD::QAR1(H),XR(b)
    • R(g);N_GUARD::R1(A),XR(g)
    • R(g);N_GUARD::R1(A)
    • S(c);S_CUTR(b)::QAR1(H)
    • S(c);S_CUTR(g)::R1(A)
    • S(f);SBLOCK,S_CUTR(g)::S(C)
  • Tries
    • Try
      • B(E);CHECK
      • Vars
        • K(d);S_FLIGHT,XS(C)::QAB1(H)
      • Refutation
        • P(h);XB(E)
    • Try
      • R(A);CHECK
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(H);CHECK,XP(h)
      • Vars
        • R(g);XQ(H)::R1(A)
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • K(F);P_SPINS(C),S_FLIGHT
    • Threat
      • QAR1(H)
    • Vars
      • R(b);CHECK,OGATE,XS(C)::B(E),XR(b)
      • R(g);N_GUARD,XR(A)::QAB(H),XP(h)
      • R(g);N_GUARD::QAB(H),XP(h)
      • R(g);N_GUARD::R1(A)
      • S(c);N_PINS(C),S_CUTR(b)::QAR1(H)
      • S(c);S_CUTR(g)::R1(A)
      • S(f);N_PINS(C),SBLOCK::S(C)
      • S(f);S_CUTR(g)::QAB(H),XP(h)
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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).