MESON Chess Problem Database

Problem Display
PID: 96862 (7b/K2p4/1Q5p/5Rpr/b3k3/1n1pNpP1/N4P2/8 w - - 0 1)

Wenman, Francis Percival (aka Percy Wenman)

200 Assorted Problems (Wenman), 1945

7b/K2p4/1Q5p/5Rpr/b3k3/1n1pNpP1/N4P2/8

#2

7 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bc3
      • 2.Sxc3#
    • 1...Sd4
      • 2.Sc3#
  • Tries
    • 1.Qb4+?
      • 1...Sd4
        • 2.Sc3#
      • 1...Bd4+!
    • 1.Qe6+?
      • 1...Kd4
        • 2.Rd5#
        • 2.Qc4#
        • 2.Qd5#
      • 1...Be5
        • 2.Qd5#
        • 2.Qxe5#
      • 1...dxe6!
    • 1.Qb7+?
      • 1...Kd4
        • 2.Qd5#
        • 2.Qb4#
      • 1...d5
        • 2.Qxd5#
      • 1...Bc6!
  • Keys
    • 1.Qg6!
      • threat
        • 2.Rd5#
      • 1...Bd4+
        • 2.Rc5#
      • 1...Kd4
        • 2.Rd5#
      • 1...Be5
        • 2.Rf4#
      • 1...Sd4
        • 2.Sc3#
      • 1...g4
        • 2.Qxg4#
      • 1...d5
        • 2.Rxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • B(j);N_GUARD::S(A),XB(j)
    • S(a);S_CUTB(j)::S(A)
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • S(a);P_SPINS(a)::S(A)
      • Refutation
        • B(j);CHECK,P_SPINB(j)
    • Try
      • Q(F);CHECK
      • Refutation
        • P(i);XQ(F)
    • Try
      • Q(F);CHECK
      • Vars
        • P(i);P_SPINP(i)::QAB1(F),XP(i)
      • Refutation
        • B(d);P_SPINB(d)
  • Actual
    • Q(F);
    • Threat
      • QAB(F)+R(E)
    • Vars
      • B(j);CHECK,SBLOCK::QAB(F)+R(E)
      • K(e);P-FLIGHT::R1(E)
      • B(j);SBLOCK::QAB(F)+R(E),DCHECK
      • S(a);SBLOCK,S_CUTB(j)::S(A)
      • P(f);OGATE::QAR2(F),XP(f)
      • P(i);::QAB(F)+R(E),XP(i)
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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).