MESON Chess Problem Database

Problem Display
PID: 66837 (2K5/3Np1b1/1R2n3/2pp2q1/P1k1n2Q/P2R3b/4P3/3N4 w - - 0 1)

Waterhouse, T

Chess, 1947

2K5/3Np1b1/1R2n3/2pp2q1/P1k1n2Q/P2R3b/4P3/3N4

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qe3
      • 2.Sxe3#
    • 1...Qxh4
      • 2.Se3#
    • 1...Qf6
      • 2.Se3#
    • 1...Qg2
      • 2.Se3#
    • 1...Qg4
      • 2.Se3#
    • 1...Qe5
      • 2.Se3#
    • 1...Qf5
      • 2.Se3#
    • 1...Qh5
      • 2.Se3#
    • 1...Qg6
      • 2.Se3#
    • 1...Bb2
      • 2.Sxb2#
    • 1...Bh6
      • 2.Sb2#
    • 1...Bf8
      • 2.Sb2#
    • 1...Sd4
      • 2.Sb2#
    • 1...Sf4
      • 2.Se3#
  • Tries
    • 1.Se5+?
      • 1...Qxe5
        • 2.Se3#
      • 1...Bxe5!
    • 1.Rc6?
      • threat
        • 2.Sb6#
      • 1...Sc7
        • 2.Rxc5#
      • 1...Sd4
        • 2.Sb2#
      • 1...Sf4
        • 2.Se3#
      • 1...Sd8
        • 2.Rxc5#
      • 1...Sf8
        • 2.Rxc5#
      • 1...Bc3!
    • 1.Qxe4+?
      • 1...Bd4
        • 2.Sb2#
        • 2.Rc3#
      • 1...Sd4
        • 2.Sb2#
        • 2.Rc3#
      • 1...d4
        • 2.Sb2#
        • 2.Rc3#
      • 1...dxe4!
  • Keys
    • 1.Rb5!
      • threat
        • 2.Sb6#
      • 1...Sc7
        • 2.Rxc5#
      • 1...Sd4
        • 2.Sb2#
      • 1...Sf4
        • 2.Se3#
      • 1...Sd8
        • 2.Rxc5#
      • 1...Sf8
        • 2.Rxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 12
  • Sets
    • Q(f);N_GUARD::S(A),XQ(f)
    • Q(f);N_GUARD,N_SPINS(c),XQ(F)::S(A)
    • Q(f);N_GUARD::S(A)
    • Q(f);N_GUARD,N_SPINS(c)::S(A)
    • B(i);N_GUARD::S(A),XB(i)
    • B(i);N_GUARD::S(A)
    • S(g);N_SPINS(c),P_PINS(H),S_CUTB(i)::S(A)
    • S(g);N_SPINS(c),P_PINS(H),S_CUTQ(f)::S(A)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • Q(f);XS(H)::S(A)
      • Refutation
        • B(i);XS(H)
    • Try
      • R(G);P_PINP(d)
      • Threat
        • S(H)
      • Vars
        • S(g);N_GUARD,P_PINS(H)::R1(G),XP(d)
        • S(g);N_SPINS(c),P_PINS(H),S_CUTB(i)::S(A)
        • S(g);N_SPINS(c),P_PINS(H),S_CUTQ(f)::S(A)
      • Refutation
        • B(i);
    • Try
      • Q(F);CHECK,XS(c)
      • Refutation
        • P(e);XQ(F)
  • Actual
    • R(G);
    • Threat
      • S(H)
    • Vars
      • S(g);N_GUARD,P_PINS(H)::R1(G),XP(d)
      • S(g);N_SPINS(c),P_PINS(H),S_CUTB(i)::S(A)
      • S(g);N_SPINS(c),P_PINS(H),S_CUTQ(f)::S(A)
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).