MESON Chess Problem Database

Problem Display
PID: 234067 (8/8/1K2B1pb/RQ6/2P1k3/2P1nR2/8/2n1B1N1 w - - 0 1)

Wallis, Walter Warren

Il Due Mosse, 1960

8/8/1K2B1pb/RQ6/2P1k3/2P1nR2/8/2n1B1N1

#2

9 + 5

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Qb1#
    • 1...Sd1
      • 2.Qc6#
      • 2.Qd5#
      • 2.Qe5#
    • 1...Sf1
      • 2.Qc6#
      • 2.Qd5#
      • 2.Qe5#
    • 1...Sc2
      • 2.Qc6#
      • 2.Qd5#
      • 2.Qe5#
    • 1...Sg2
      • 2.Qc6#
      • 2.Qd5#
      • 2.Qe5#
    • 1...Sxc4+
      • 2.Qxc4#
    • 1...Sg4
      • 2.Qc6#
      • 2.Qd5#
    • 1...Sd5+
      • 2.Qxd5#
    • 1...Sf5
      • 2.Qc6#
      • 2.Qd5#
      • 2.Qe5#
  • Tries
    • 1.Bd5+?
      • 1...Kd3
        • 2.Qb1#
      • 1...Sxd5+
        • 2.Qxd5#
      • 1...Ke5!
    • 1.Bf5+?
      • 1...Sxf5
        • 2.Qc6#
        • 2.Qd5#
        • 2.Qe5#
      • 1...gxf5!
    • 1.Qc6+?
      • 1...Sd5+
        • 2.Qxd5#
      • 1...Kd3!
  • Keys
    • 1.Qe8!
      • threat
        • 2.Bf5#
      • 1...Sxc4+
        • 2.Bxc4#
      • 1...Sd5+
        • 2.Bxd5#
      • 1...Kd3
        • 2.Qxg6#
      • 1...Sf5
        • 2.Bd5#
        • 2.Bxf5#
        • 2.Qc6#
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(c);P_SPINS(b),S_FLIGHT::QAB(G)
    • S(b);CHECK,OGATE,XP(E)::QAR2(G),XS(b)
    • S(b);CHECK,N_GUARD::QAB1(G),XS(b)
  • Tries
    • Try
      • B(I);CHECK
      • Vars
        • K(c);P_SPINS(b),S_FLIGHT::QAB(G)
        • S(b);CHECK,OGATE,XB(I)::QAB1(G),XS(b)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • B(I);CHECK
      • Refutation
        • P(d);XB(I)
    • Try
      • Q(G);CHECK
      • Vars
        • S(b);CHECK,N_GUARD,P_SPINS(b)::QAB1(G),XS(b)
      • Refutation
        • K(c);P_SPINS(b),S_FLIGHT
  • Actual
    • Q(G);
    • Threat
      • QAR(G)+B(I),DCHECK
    • Vars
      • S(b);CHECK,OGATE,XP(E)::QAR(G)+B(I),XS(b)
      • S(b);CHECK::QAR(G)+B(I),DCHECK,XS(b)
      • K(c);P_SPINS(b),S_FLIGHT::QAB(G),XP(d)
HTML5 logo

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).