MESON Chess Problem Database

Problem Display
PID: 96908 (4R3/8/1K2n3/2pk4/6NR/8/1Q2P3/8 w - - 0 1)

Wright Wood, S (= Wood, SW)

The Chess Problem, 1947

4R3/8/1K2n3/2pk4/6NR/8/1Q2P3/8

#2

6 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Se3#
    • 1...Ke4
      • 2.Qe5#
    • 1...c4
      • 2.Qe5#
  • Tries
    • 1.Rxe6?
      • 1...Kc4
        • 2.Se3#
        • 2.Sf6#
      • 1...c4
        • 2.Qe5#
      • 1...Kxe6!
    • 1.Rd8+?
      • 1...Kc4
        • 2.Se3#
        • 2.Se5#
      • 1...Ke4
        • 2.Qe5#
      • 1...Sxd8!
    • 1.Qc3?
      • 1...Ke4
        • 2.Se3#
        • 2.Qe5#
      • 1...Sd4
        • 2.Qxc5#
      • 1...Sf4
        • 2.Qxc5#
      • 1...Sg5
        • 2.Qd3#
        • 2.Qxc5#
      • 1...Sc7
        • 2.Qd3#
        • 2.Qxc5#
      • 1...Sg7
        • 2.Qd3#
        • 2.Qxc5#
      • 1...Sd8
        • 2.Qd3#
        • 2.Qxc5#
      • 1...Sf8
        • 2.Qd3#
        • 2.Qxc5#
      • 1...c4
        • 2.Qe5#
      • 1...Kd6!
    • 1.Qf6?
      • 1...Ke4
        • 2.Qe5#
      • 1...Kd6
        • 2.Rd8#
        • 2.Qxe6#
      • 1...Sd4
        • 2.Se3#
      • 1...Sf4
        • 2.Se3#
      • 1...Sg5
        • 2.Se3#
      • 1...Sc7
        • 2.Se3#
      • 1...Sg7
        • 2.Se3#
      • 1...Sd8
        • 2.Se3#
      • 1...Sf8
        • 2.Se3#
      • 1...c4
        • 2.Qe5#
      • 1...Kc4!
    • 1.Qb5?
      • 1...Kd4
        • 2.Qd3#
      • 1...Kd6
        • 2.Qc6#
      • 1...Sd4
        • 2.Qxc5#
      • 1...Sf4
        • 2.Qxc5#
      • 1...Sg5
        • 2.Qd3#
        • 2.Qxc5#
      • 1...Sc7
        • 2.Qd3#
        • 2.Qxc5#
      • 1...Sg7
        • 2.Qd3#
        • 2.Qxc5#
      • 1...Sd8
        • 2.Qd3#
        • 2.Qxc5#
      • 1...Sf8
        • 2.Qd3#
        • 2.Qxc5#
      • 1...Ke4!
  • Keys
    • 1.Rh6!
      • 1...Kc4
        • 2.Se3#
      • 1...Ke4
        • 2.Qe5#
      • 1...Kd6
        • 2.Qd2#
      • 1...Sd4
        • 2.Se3#
      • 1...Sf4
        • 2.Se3#
      • 1...Sg5
        • 2.Se3#
      • 1...Sc7
        • 2.Se3#
      • 1...Sg7
        • 2.Se3#
      • 1...Sd8
        • 2.Se3#
      • 1...Sf8
        • 2.Se3#
      • 1...c4
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::R(D)+S(C),DCHECK
    • K(b);P_SPINS(c),S_FLIGHT::QAR1(A)
    • P(a);SBLOCK::QAR1(A)
  • Tries
    • Try
      • R(F);XS(c)
      • Vars
        • P(a);SBLOCK::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT,XR(F)
    • Try
      • R(F);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(A)
      • Refutation
        • S(c);XR(F)
    • Try
      • Q(A);
      • Vars
        • S(c);N_GUARD::QAR1(A),XP(a)
        • P(a);SBLOCK::QAR1(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(b);P_SPINS(c),S_FLIGHT::QAR1(A)
        • S(c);::S(C)
        • P(a);SBLOCK::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);P_PINP(a)
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::QAR1(A)
        • S(c);N_GUARD::QAR1(A),XP(a)
      • Refutation
        • K(b);N_SPINP(a),P_SPINS(c),S_FLIGHT
  • Actual
    • R(D);
    • Vars
      • K(b);S_FLIGHT::S(C)
      • K(b);P_SPINS(c),S_FLIGHT::QAR1(A)
      • K(b);P-FLIGHT,P_SPINS(c)::QAR(A)
      • S(c);::S(C)
      • P(a);SBLOCK::QAR1(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).