MESON Chess Problem Database

Problem Display
PID: 101351 (1B2N1rQ/1Kp3r1/2Rp2Pn/3Bk3/1Np1qpP1/2P5/8/4R2b w - - 0 1)

Hartong, Jan

Comm., Good Companions (February), 1920

1B2N1rQ/1Kp3r1/2Rp2Pn/3Bk3/1Np1qpP1/2P5/8/4R2b

#2

11 + 10

3391 Het Half Pin Thema 1924
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe8
      • 2.Qxg7#
    • 1...Sxg4
      • 2.Qh5#
    • 1...f3
      • 2.Rxe4#
  • Tries
    • 1.Ba7?
      • threat
        • 2.Bd4#
      • 1...Sxg4
        • 2.Qh5#
      • 1...f3
        • 2.Rxe4#
      • 1...Sf5!
  • Keys
    • 1.Rc5!
      • threat
        • 2.Sc6#
      • 1...c6+
        • 2.Bf7#
      • 1...Rxe8
        • 2.Qxg7#
      • 1...Sxg4
        • 2.Qh5#
      • 1...dxc5
        • 2.Bxc7#
      • 1...f3
        • 2.Rxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(j);N_GUARD,XS(J)::QAB(K),XR(i)
    • S(g);OGATE,XP(D)::QAR(K)
    • P(d);S_CUTB(a)::R1(A),XQ(c)
  • Tries
    • Try
      • B(I);
      • Threat
        • B(I)
      • Vars
        • S(g);OGATE,XP(D)::QAR(K)
        • P(d);S_CUTB(a)::R1(A),XQ(c)
      • Refutation
        • S(g);
  • Actual
    • R(F);P_SPINB(E)
    • Threat
      • S(C)
    • Vars
      • P(h);CHECK,N_PINB(E),P_SPINP(f)::R(F)+B(E)
      • R(j);N_GUARD,XS(J)::QAB(K),XR(i)
      • S(g);OGATE,XP(D)::QAR(K)
      • P(f);OGATEB,P_SPINP(h),XR(F)::B(I),XP(h)
      • P(d);S_CUTB(a)::R1(A),XQ(c)
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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).