MESON Chess Problem Database

Problem Display
PID: 4581 (3QB1b1/2p5/p2q4/K2kNP2/8/pPnNpP2/3R1B2/8 w - - 0 1)

Pospisil, Josef

Wiener Novellistische Blatter, 1880

3QB1b1/2p5/p2q4/K2kNP2/8/pPnNpP2/3R1B2/8

#2

10 + 8

3804 Ceske Melodie 1908

SOLUTION

  • SOUND
  • Sets
    • 1...Qd7
      • 2.Qxd7#
    • 1...exd2
      • 2.Bc6#
    • 1...e2
      • 2.Bc6#
  • Tries
    • 1.Sf4+?
      • 1...Kc5
        • 2.b4#
      • 1...Kxe5!
    • 1.Bxe3?
      • threat
        • 2.Bc6#
      • 1...Qd7
        • 2.Qxd7#
      • 1...c6
        • 2.Bxc6#
      • 1...Qxd8!
    • 1.Bf7+?
      • 1...Kd4
        • 2.Sc6#
      • 1...Bxf7!
  • Keys
    • 1.Sd7!
      • threat
        • 2.Sb4#
      • 1...Qb4+
        • 2.Sxb4#
      • 1...Qc5+
        • 2.S7xc5#
      • 1...Qb6+
        • 2.Sxb6#
      • 1...Kd4
        • 2.Sc1#
        • 2.Se1#
        • 2.Sb2#
        • 2.Sb4#
        • 2.Sf4#
        • 2.S3c5#
        • 2.S3e5#
      • 1...Kc6
        • 2.Qa8#
      • 1...Qxd7
        • 2.Qxd7#
      • 1...exd2
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • Q(f);OGATEB::QAR2(I),XQ(f)
    • P(c);XR(A)::B(J)
    • P(c);::B(J)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(d);N_SPINQ(f),P-FLIGHT,P_SPINP(c)::P(C)
      • Refutation
        • K(d);N_SPINQ(f),P-FLIGHT,XS(G)
    • Try
      • B(B);XP(c)
      • Threat
        • B(J)
      • Vars
        • Q(f);OGATEB::QAR2(I),XQ(f)
        • P(g);::B(J),XP(g)
      • Refutation
        • Q(f);N_SPINQ(f),XQ(I)
    • Try
      • B(J);CHECK
      • Vars
        • K(d);P-FLIGHT,P_SPINP(c)::S(G)
      • Refutation
        • B(h);XB(J)
  • Actual
    • S(G);N_PINQ(f)
    • Threat
      • R(A)+S(D),DCHECK
    • Vars
      • Q(f);CHECK::R(A)+S(D),DCHECK,XQ(f)
      • Q(f);CHECK::QAR(I)+S(G),XQ(f)
      • Q(f);CHECK::QAR(I)+S(G),DCHECK,XQ(f)
      • K(d);S_FLIGHT::QAB(I)
      • Q(f);OGATE,P_SPINQ(f),XS(G)::QAR2(I),XQ(f)
      • P(c);XR(A)::S(G)
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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).