MESON Chess Problem Database

Problem Display
PID: 96881 (N3B3/nppprnbp/N6Q/k5P1/2P2R1K/1P4B1/6bR/4r3 w - - 0 1)

Wenman, Francis Percival (aka Percy Wenman)

200 Assorted Problems (Wenman), 1945

N3B3/nppprnbp/N6Q/k5P1/2P2R1K/1P4B1/6bR/4r3

#2

11 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bf1
      • 2.Ra2#
    • 1...Bh1
      • 2.Ra2#
    • 1...Bf3
      • 2.Ra2#
    • 1...Bh3
      • 2.Ra2#
    • 1...Be4
      • 2.Ra2#
    • 1...Bd5
      • 2.Ra2#
    • 1...Se5
      • 2.Bxe1#
    • 1...c5
      • 2.Qb6#
    • 1...d5
      • 2.b4#
  • Tries
    • 1.Bxe1+?
      • 1...Bc3
        • 2.Bxc3#
      • 1...Rxe1!
  • Keys
    • 1.Rf5+!
      • 1...R1e5
        • 2.Be1#
      • 1...R7e5
        • 2.Bxe1#
      • 1...Bd5
        • 2.Ra2#
      • 1...Be5
        • 2.Bxe1#
      • 1...Sb5
        • 2.Rxb5#
      • 1...Se5
        • 2.Bxe1#
      • 1...b5
        • 2.Bxc7#
      • 1...c5
        • 2.Qb6#
      • 1...d5
        • 2.b4#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 5
  • Sets
    • B(b);OGATE::R(A)
    • S(i);S_CUTB(j),S_CUTR(h)::B(C),XR(a)
    • P(f);N_GUARD::QAB1(I)
    • P(g);::P(B)
  • Tries
    • Try
      • B(C);CHECK,XR(a)
      • Vars
        • B(j);N_GUARD,P_SPINB(j)::B(C),XB(j)
      • Refutation
        • R(h);XB(C)
  • Actual
    • R(E);CHECK
    • Vars
      • R(a);P_SPINR(a)::B(C)
      • R(h);P_SPINR(h)::B(C),XR(a)
      • B(b);OGATE,P_SPINB(b)::R(A)
      • B(j);P_SPINB(j)::B(C),XR(a)
      • S(d);N_GUARD,P_SPINS(d)::R1(E),XS(d)
      • S(i);P_SPINS(i)::B(C),XR(a)
      • P(e);P_SPINP(e)::B(C),XP(f)
      • P(f);P_SPINP(f)::QAB1(I)
      • P(g);P_SPINP(g)::P(B)
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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).