MESON Chess Problem Database

Problem Display
PID: 138872 (8/1QN1pp2/K4pq1/b2R2p1/4kP2/2pR2P1/3rrB2/1b6 w - - 0 1)

Winter, O

2nd HM., BCPS, 1922

8/1QN1pp2/K4pq1/b2R2p1/4kP2/2pR2P1/3rrB2/1b6

#2

8 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qf5
      • 2.R5d4#
    • 1...Rxd3
      • 2.Re5#
    • 1...Re3
      • 2.Rxe3#
    • 1...Bxd3+
      • 2.Rb5#
    • 1...Bb4
      • 2.Qxb4#
    • 1...Bxc7
      • 2.Qb4#
    • 1...f5+
      • 2.Rd6#
  • Tries
    • 1.Sb5?
      • threat
        • 2.Qxe7#
      • 1...f5+
        • 2.Rd6#
      • 1...Rxd3
        • 2.Re5#
      • 1...Bxd3
        • 2.Rc5#
        • 2.Re5#
        • 2.Rxg5#
      • 1...Re3
        • 2.Rxe3#
      • 1...e5
        • 2.Sd6#
      • 1...Qf5
        • 2.R5d4#
      • 1...Bc7
        • 2.Sxc3#
      • 1...Bd8
        • 2.Sxc3#
      • 1...e6
        • 2.Sd6#
      • 1...Bb4!
  • Keys
    • 1.Se8!
      • threat
        • 2.Qxe7#
      • 1...Bxd3+
        • 2.Rb5#
      • 1...f5+
        • 2.Rd6#
      • 1...Rxd3
        • 2.Re5#
      • 1...Re3
        • 2.Rxe3#
      • 1...e5
        • 2.Sd6#
      • 1...Qf5
        • 2.R5d4#
      • 1...Bb4
        • 2.Qxb4#
      • 1...Bc7
        • 2.Qb4#
      • 1...Bd8
        • 2.Qb4#
      • 1...e6
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • Q(i);SBLOCK::QAB(G)+R(E),DCHECK
    • R(b);SBLOCK,XR(B)::QAB(G)+R(E),DCHECK
    • R(c);N_GUARD::R1(B),XR(c)
    • B(a);CHECK,SBLOCK,XR(B)::QAB(G)+R(E)
    • B(f);N_GUARD::QAR(G),XB(f)
    • B(f);N_GUARD,XS(H)::QAR(G)
    • P(h);CHECK,SBLOCK::QAB(G)+R(E)
  • Tries
    • Try
      • S(H);
      • Threat
        • QAR(G),XP(j)
      • Vars
        • P(h);CHECK,SBLOCK::QAB(G)+R(E)
        • R(b);SBLOCK,XR(B)::QAB(G)+R(E),DCHECK
        • R(c);N_GUARD::R1(B),XR(c)
        • P(j);N_GUARD::S(H)
        • Q(i);SBLOCK::QAB(G)+R(E),DCHECK
        • B(f);N_GUARD::S(H),XP(d)
      • Refutation
        • B(f);
  • Actual
    • S(H);
    • Threat
      • QAR(G),XP(j)
    • Vars
      • B(a);CHECK,SBLOCK,XR(B)::QAB(G)+R(E)
      • P(h);CHECK,SBLOCK::QAB(G)+R(E)
      • R(b);SBLOCK,XR(B)::QAB(G)+R(E),DCHECK
      • R(c);N_GUARD::R1(B),XR(c)
      • P(j);N_GUARD::S(H)
      • Q(i);SBLOCK::QAB(G)+R(E),DCHECK
      • B(f);N_GUARD::QAR(G),XB(f)
      • B(f);N_GUARD::QAR(G)
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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).