MESON Chess Problem Database

Problem Display
PID: 136456 (4N3/K2B4/p2P4/2B1k3/r3P2q/N7/3Q2P1/4R3 w - - 0 1)

Delobel, Bernard

Source?, 0000

4N3/K2B4/p2P4/2B1k3/r3P2q/N7/3Q2P1/4R3

#2

10 + 4

6490 yacpdb 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Qg5
      • 2.Qxg5#
    • 1...Qh1
      • 2.Qg5#
    • 1...Qh2
      • 2.Qg5#
    • 1...Qxe4
      • 2.Qg5#
    • 1...Qf4
      • 2.Qd5#
    • 1...Qh8
      • 2.Qg5#
    • 1...Rxa3
      • 2.Bd4#
    • 1...Rc4
      • 2.Sxc4#
    • 1...Rd4
      • 2.Bxd4#
    • 1...Rxe4
      • 2.Sc4#
    • 1...Ra5
      • 2.Sc4#
      • 2.Bd4#
  • Tries
    • 1.g3?
      • threat
        • 2.Qd5#
      • 1...Qxe4
        • 2.Qg5#
      • 1...Rxe4
        • 2.Sc4#
        • 2.Qd4#
      • 1...Rd4
        • 2.Bxd4#
        • 2.Qxd4#
      • 1...Qxg3!
  • Keys
    • 1.Be3!
      • threat
        • 2.Qd5#
      • 1...Kxe4
        • 2.Bf2#
      • 1...Qxe4
        • 2.Bf4#
      • 1...Rxe4
        • 2.Qa5#
      • 1...Rd4
        • 2.Bxd4#
        • 2.Qxd4#
      • 1...Ra5
        • 2.Bd4#
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 8
  • Sets
    • Q(b);N_GUARD::QAR2(B),XQ(b)
    • Q(b);N_GUARD::QAR2(B)
    • Q(b);N_GUARD,P_SPINQ(b),XP(E)::QAR2(B)
    • Q(b);SBLOCK::QAR1(B)
    • R(a);N_GUARD,XS(D)::B(F)
    • R(a);N_GUARD::S(D),XR(a)
    • R(a);N_GUARD::B(F),XR(a)
    • R(a);N_GUARD,P_SPINR(a),XP(E)::S(D)
  • Tries
    • Try
      • P(C);
      • Threat
        • QAR1(B)
      • Vars
        • Q(b);N_GUARD,P_SPINQ(b),XP(E)::QAR2(B)
      • Refutation
        • Q(b);XP(C)
  • Actual
    • B(F);
    • Threat
      • QAR1(B)
    • Vars
      • K(c);OGATEB,P-FLIGHT,XP(E)::R(A)+B(F)
      • Q(b);N_GUARD,XP(E)::B(F)
      • R(a);N_GUARD,SBLOCK,XP(E)::QAR(B)
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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).