MESON Chess Problem Database

Problem Display
PID: 208836 (2NnQ1K1/B2B4/p2P1p2/P2k1p2/3b1Rp1/6R1/PNn2P2/8 w - - 0 1)

Wheeler, Charles Henry

Cleveland Leader, 1876

2NnQ1K1/B2B4/p2P1p2/P2k1p2/3b1Rp1/6R1/PNn2P2/8

#2

12 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bxf2
      • 2.Rxf5#
    • 1...Be3
      • 2.Rxf5#
    • 1...Sa1
      • 2.Rxd4#
    • 1...Se1
      • 2.Rxd4#
    • 1...Sa3
      • 2.Rxd4#
    • 1...Se3
      • 2.Rxd4#
    • 1...Sb4
      • 2.Rxd4#
    • 1...Sc6
      • 2.Bxc6#
      • 2.Qe6#
    • 1...Se6
      • 2.Qxe6#
    • 1...Sb7
      • 2.Bc6#
      • 2.Qe6#
    • 1...Sf7
      • 2.Bc6#
      • 2.Qe6#
  • Tries
    • 1.Be6+?
      • 1...Ke5
        • 2.Sd3#
      • 1...Sxe6!
    • 1.Qf7+?
      • 1...Ke5
        • 2.Sd3#
      • 1...Se6
        • 2.Qxe6#
      • 1...Sxf7!
  • Keys
    • 1.Rd3!
      • threat
        • 2.Rxf5#
      • 1...Se6
        • 2.Qxe6#
      • 1...Se3
        • 2.Rdxd4#
        • 2.Rfxd4#
      • 1...Sc6
        • 2.Bxc6#
        • 2.Qe6#
      • 1...Sf7
        • 2.Bc6#
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 7
  • Sets
    • B(b);N_GUARD,XP(C)::R(E),XP(e)
    • B(b);N_GUARD::R(E),XP(e)
    • S(a);N_GUARD::R1(E),XB(b)
    • S(h);N_GUARD::QAB1(K),XS(h)
  • Tries
    • Try
      • B(I);CHECK
      • Vars
        • K(d);P-FLIGHT::S(B)
      • Refutation
        • S(h);XB(I)
    • Try
      • Q(K);CHECK
      • Vars
        • K(d);P-FLIGHT::S(B)
        • S(h);N_GUARD,P_SPINS(h)::QAB1(K),XS(h)
      • Refutation
        • S(h);XQ(K)
  • Actual
    • R(D);P_PINB(b)
    • Threat
      • R(E),XP(e)
    • Vars
      • S(h);N_GUARD::QAB1(K),XS(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).