MESON Chess Problem Database

Problem Display
PID: 184846 (8/2K1p3/2p1Pk1B/2Rb1P2/1p4P1/1n6/8/5Q2 w - - 0 1)

Jewetsky, Feodor Orestovich

125 Shakhmaty Zadachi (Eventski), 1908

8/2K1p3/2p1Pk1B/2Rb1P2/1p4P1/1n6/8/5Q2

#2

7 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bh1
      • 2.g5#
    • 1...Bg2
      • 2.g5#
    • 1...Bf3
      • 2.g5#
    • 1...Bc4
      • 2.g5#
    • 1...Be4
      • 2.g5#
    • 1...Sa1
      • 2.Qxa1#
    • 1...Sd2
      • 2.Qa1#
    • 1...Sa5
      • 2.Qa1#
    • 1...Sxc5
      • 2.Qa1#
  • Tries
    • 1.Qa1+?
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sxa1!
  • Keys
    • 1.Qc4!
      • 1...Ke5
        • 2.Bg7#
      • 1...Bxc4
        • 2.g5#
      • 1...Bxe6
        • 2.Qxe6#
      • 1...Sxc5
        • 2.Qd4#
      • 1...Bh1
        • 2.g5#
      • 1...Bg2
        • 2.g5#
      • 1...Bf3
        • 2.g5#
      • 1...Be4
        • 2.g5#
      • 1...Sa1
        • 2.Qd4#
      • 1...Sc1
        • 2.Qd4#
      • 1...Sd2
        • 2.Qd4#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sa5
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 4
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(c);::P(B)
    • S(a);N_GUARD::QAB(A),XS(a)
    • S(a);N_GUARD::QAB(A)
    • S(a);N_GUARD,XR(C)::QAB(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAB(A),XS(a)
      • Refutation
        • S(a);XQ(A)
  • Actual
    • Q(A);
    • Vars
      • K(e);P_SPINB(c),S_FLIGHT::B(F)
      • B(c);XQ(A)::P(B)
      • B(c);OGATE,XP(E)::QAR1(A),XB(c)
      • S(a);N_GUARD,XR(C)::QAB(A)
      • B(c);::P(B)
      • S(a);N_GUARD::QAB(A)
      • S(a);N_GUARD::QAB(A),XS(a)
HTML5 logo

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).