MESON Chess Problem Database

Problem Display
PID: 132341 (1K1n4/5P2/1Np1PN2/2B1k1p1/6P1/1r1p2P1/1R1n4/Q4b2 w - - 0 1)

Wainwright, Joseph CJ

Bauernumwandlungaufsgaben, 1907

1K1n4/5P2/1Np1PN2/2B1k1p1/6P1/1r1p2P1/1R1n4/Q4b2

#2

10 + 8

1829 The Theory of Pawn Promotion 1912

SOLUTION

  • SOUND
  • Sets
    • 1...Sb1
      • 2.Re2#
    • 1...Sf3
      • 2.Re2#
    • 1...Sc4
      • 2.Re2#
  • Keys
    • 1.f8S!
      • threat
        • 2.Rxb3#
      • 1...Rxb6+
        • 2.Rxb6#
      • 1...Kxf6
        • 2.Rxb3#
      • 1...Rxb2
        • 2.Qxb2#
      • 1...Sxe6
        • 2.S8d7#
      • 1...Ra3
        • 2.Sb6d7#
      • 1...Rc3
        • 2.Sb6d7#
      • 1...Rb4
        • 2.Rxb4#
      • 1...Rb5
        • 2.Rb3#
        • 2.Rb4#
        • 2.Rxb5#
      • 1...Sb1
        • 2.Re2#
      • 1...Sf3
        • 2.Re2#
      • 1...Sc4
        • 2.Re2#
      • 1...Se4
        • 2.S6d7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • S(b);OGATE::QAB(A)+R(B),DCHECK
  • Actual
    • P(I);
    • Threat
      • QAB(A)+R(B),XR(c)
    • Vars
      • R(c);CHECK,OGATE,XS(F)::QAB(A)+R(B),XR(c)
      • K(e);S_FLIGHT,XS(H)::QAB(A)+R(B),XR(c)
      • R(c);OGATE,P_SPINR(c),XR(B)::QAB(A),XR(c)
      • S(h);SBLOCK,XP(G)::S(I)
      • R(c);N_PINS(F)::S(F)
      • R(c);OGATE::QAB(A)+R(B),XR(c)
      • S(b);OGATE::QAB(A)+R(B),DCHECK
      • S(b);SBLOCK::S(H)
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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).