MESON Chess Problem Database

Problem Display
PID: 250200 (6B1/2KQ4/4N3/1P6/1pk1bR1p/2B3rq/P1Rp1n2/3r2bn w - - 0 1)

Pikler, Robert

2nd Comm., Grantham Journal, 1927

6B1/2KQ4/4N3/1P6/1pk1bR1p/2B3rq/P1Rp1n2/3r2bn

#2

9 + 11

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.Qc6#
    • 1...Sd3
      • 2.Ba1#
      • 2.Bb2#
      • 2.Bxd2#
      • 2.Bd4#
      • 2.Be5#
      • 2.Bf6#
      • 2.Bg7#
      • 2.Bh8#
  • Tries
    • 1.Sg5+?
      • 1...Kc5
        • 2.Bd4#
      • 1...Qe6!
    • 1.Sg7+?
      • 1...Kc5
        • 2.Bd4#
      • 1...Qe6!
  • Keys
    • 1.Kb6!
      • threat
        • 2.Qd4#
      • 1...Qxe6+
        • 2.Bxe6#
      • 1...Sd3+
        • 2.Bd4#
      • 1...Sg4+
        • 2.Sc5#
      • 1...Rd3
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(f);SBLOCK::QAR2(H)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(i);N_GUARD,N_SPINB(j),P-FLIGHT::R(B)+B(C),DCHECK
      • Refutation
        • Q(g);P_SPINQ(g)
    • Try
      • S(F);CHECK
      • Vars
        • K(i);N_GUARD,N_SPINB(j),P-FLIGHT::R(B)+B(C),DCHECK
      • Refutation
        • Q(g);P_SPINQ(g)
  • Actual
    • K(G);S_FLIGHT
    • Threat
      • QAR1(H)
    • Vars
      • Q(g);CHECK,OGATE,P_SPINQ(g),XS(F)::B(I),XQ(g)
      • S(e);CHECK,SBLOCK,S_CUTR(f)::R(B)+B(C)
      • S(e);CHECK,S_CUTQ(g),S_CUTR(f)::B(I)+S(F)
      • R(f);SBLOCK::QAR2(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).