MESON Chess Problem Database

Problem Display
PID: 175417 (1n4b1/1NP2p2/7r/P2kN3/K3R3/4pQ2/2P5/4b3 w - - 0 1)

Prikryl, Bohuzlav

Besedy lidu, 1899

1n4b1/1NP2p2/7r/P2kN3/K3R3/4pQ2/2P5/4b3

#2

8 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Re6
      • 2.c4#
  • Tries
    • 1.Rxe3+?
      • 1...Kd4
        • 2.Qe4#
      • 1...Ke6!
    • 1.Rf4+?
      • 1...Kxe5
        • 2.Qe4#
      • 1...Ke6!
    • 1.Qf5?
      • threat
        • 2.c4#
      • 1...Rc6
        • 2.Sd3#
        • 2.Sf3#
        • 2.Sc4#
        • 2.Sg4#
        • 2.Sg6#
        • 2.Sd7#
        • 2.Sxf7#
      • 1...Bc3!
    • 1.c8Q?
      • threat
        • 2.Qc4#
        • 2.c4#
      • 1...Sd7
        • 2.Qc4#
      • 1...Bc3
        • 2.Qc4#
      • 1...Sc6
        • 2.c4#
      • 1...Rc6!
  • Keys
    • 1.Sc6!
      • threat
        • 2.Se7#
      • 1...Kxc6
        • 2.Re7#
      • 1...Rxc6
        • 2.Qf5#
      • 1...Sxc6
        • 2.c4#
      • 1...Re6
        • 2.Rd4#
      • 1...Bb4
        • 2.Sxb4#
      • 1...Bh4
        • 2.Sb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(d);SBLOCK::P(A)
  • Tries
    • Try
      • R(D);CHECK,XP(b)
      • Vars
        • K(c);P-FLIGHT::QAR1(B)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(D);CHECK
      • Vars
        • K(c);P-FLIGHT,XS(F)::QAR1(B)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • P(A)
      • Refutation
        • B(a);
    • Try
      • P(H);
      • Threat
        • DUALS(2)
      • Vars
        • S(f);::QAB1(H)
        • B(a);::QAB1(H)
        • S(f);::P(A)
      • Refutation
        • R(d);
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • K(c);S_FLIGHT,XS(F)::QAB(B)+R(D)
      • R(d);SBLOCK,XS(F)::QAR2(B)
      • S(f);SBLOCK,XS(F)::P(A)
      • R(d);SBLOCK::QAB(B)+R(D),DCHECK
      • B(a);N_GUARD::S(F),XB(a)
      • B(a);N_GUARD::S(F)
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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).