MESON Chess Problem Database

Problem Display
PID: 47468 (8/q1rRP2B/bQR1P1Kp/B1bN1p2/n4PP1/3k4/3NpP2/2n1r3 w - - 0 1)

Barnes, Barry Peter

2nd Prize, Burger-70 JT, 2002

8/q1rRP2B/bQR1P1Kp/B1bN1p2/n4PP1/3k4/3NpP2/2n1r3

#2

13 + 11

56 The Problemist 2003

SOLUTION

  • SOUND
  • Sets
    • 1...Kc2
      • 2.Se3#
    • 1...Kd4
      • 2.Sxc7#
    • 1...Bxf2
      • 2.Sb4#
    • 1...Ba3
      • 2.Sb4#
    • 1...Be3
      • 2.Sb4#
    • 1...Bb4
      • 2.Sxb4#
    • 1...Bd4
      • 2.Qb1#
    • 1...Bxb6
      • 2.Sb4#
    • 1...Bxe7
      • 2.Sb4#
    • 1...Sc3
      • 2.Sb4#
  • Tries
    • 1.Se3+?
      • 1...Bd4
        • 2.Rxd4#
        • 2.Qb1#
      • 1...Bd6
        • 2.Rcxd6#
        • 2.Rdxd6#
      • 1...Rxd7!
    • 1.Sxc7+?
      • 1...Bd4
        • 2.Rxd4#
        • 2.Qb1#
      • 1...Bd6
        • 2.Rdxd6#
      • 1...Kc2!
    • 1.Qb3+?
      • 1...Kd4
        • 2.Qe3#
      • 1...Sc3
        • 2.Sb4#
        • 2.Qxc3#
      • 1...Sxb3!
  • Keys
    • 1.Kxf5!
      • threat
        • 2.Ke5#
      • 1...Kc2
        • 2.Se3#
      • 1...Kd4
        • 2.Sxc7#
      • 1...Sc3
        • 2.Sb4#
      • 1...Bb4
        • 2.Sxb4#
      • 1...Bd4
        • 2.Qb1#
      • 1...Bd6
        • 2.Kf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • K(d);P_SPINB(f),S_FLIGHT::S(F)
    • K(d);P-FLIGHT,P_SPINB(f)::R(K)+S(F),XR(k)
    • B(f);XP(B)::R(K)+S(F),DCHECK
    • B(f);::R(K)+S(F),DCHECK
    • B(f);::R(K)+S(F),DCHECK,XB(f)
    • B(f);SBLOCK::QAB(G)
    • B(f);XQ(G)::R(K)+S(F),DCHECK
    • B(f);XP(L)::R(K)+S(F),DCHECK
    • S(e);SBLOCK::R(K)+S(F),DCHECK
  • Tries
    • Try
      • S(F);CHECK
      • Refutation
        • R(k);XR(K)
    • Try
      • S(F);CHECK,XR(k)
      • Vars
        • B(f);N_GUARD,P_SPINB(f)::R(K),XB(f)
      • Refutation
        • K(d);P_SPINB(f),S_FLIGHT
    • Try
      • Q(G);CHECK
      • Vars
        • K(d);OGATE,P-FLIGHT::QAB1(G)
      • Refutation
        • S(a);XQ(G)
  • Actual
    • K(J);S_FLIGHT,XP(g)
    • Threat
      • B(M)+K(J)
    • Vars
      • K(d);P_SPINB(f),S_FLIGHT::S(F)
      • K(d);P-FLIGHT,P_SPINB(f)::R(K)+S(F),XR(k)
      • S(e);SBLOCK::R(K)+S(F),DCHECK
      • B(f);::R(K)+S(F),DCHECK,XB(f)
      • B(f);SBLOCK::QAB(G)
      • B(f);::B(M)+K(J)
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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).