MESON Chess Problem Database

Problem Display
PID: 189428 (2K5/8/4B3/2P4N/3nk3/B2p4/3P2P1/7Q w - - 0 1)

Simkhovich, Froim Markovich

Casopis ceskoslovenskych sachistu, 1911

2K5/8/4B3/2P4N/3nk3/B2p4/3P2P1/7Q

#2

8 + 3

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Tries
    • 1.g3+?
      • 1...Ke5
        • 2.Qd5#
      • 1...Sf3!
    • 1.g4+?
      • 1...Ke5
        • 2.Qd5#
      • 1...Sf3!
  • Keys
    • 1.Bb2!
      • 1...Ke5
        • 2.Qe1#
      • 1...Sxe6
        • 2.g4#
      • 1...Sc2
        • 2.Qh4#
        • 2.g3#
        • 2.g4#
      • 1...Se2
        • 2.g3#
        • 2.g4#
      • 1...Sb3
        • 2.Qe1#
        • 2.Qh4#
        • 2.g3#
        • 2.g4#
      • 1...Sf3
        • 2.gxf3#
      • 1...Sb5
        • 2.Qe1#
        • 2.Qh4#
        • 2.g3#
        • 2.g4#
      • 1...Sf5
        • 2.g3#
        • 2.g4#
      • 1...Sc6
        • 2.Qe1#
        • 2.Qh4#
        • 2.g3#
        • 2.g4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • P(C);CHECK
      • Vars
        • K(c);OGATE,P-FLIGHT::QAR1(A)
      • Refutation
        • S(b);P_SPINS(b)
    • Try
      • P(C);CHECK
      • Vars
        • K(c);OGATE,P-FLIGHT::QAR1(A)
      • Refutation
        • S(b);P_SPINS(b)
  • Actual
    • B(D);
    • Vars
      • K(c);P-FLIGHT,P_SPINS(b)::QAR(A)
      • S(b);N_GUARD,XB(G)::QAB(A)+P(C)
      • S(b);OGATE::P(C),XS(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).