MESON Chess Problem Database

Problem Display
PID: 263827 (8/5K2/6B1/3pk3/3n3B/Q4p2/8/4b3 w - - 0 1)

Anonymous

Tijdschrift vd NSB, 1894

8/5K2/6B1/3pk3/3n3B/Q4p2/8/4b3

#2

4 + 5

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Bc3
      • 2.Bg3#
    • 1...Bg3
      • 2.Bxg3#
    • 1...Bb4
      • 2.Bg3#
    • 1...Ba5
      • 2.Bg3#
    • 1...f2
      • 2.Bg3#
      • 2.Qg3#
  • Tries
    • 1.Qb2?
      • threat
        • 2.Qb8#
      • 1...Kf4
        • 2.Qxd4#
      • 1...Bb4
        • 2.Bg3#
        • 2.Qh2#
      • 1...Ba5
        • 2.Bg3#
        • 2.Qh2#
      • 1...Kd6!
    • 1.Qe7+?
      • 1...Kf4
        • 2.Qg5#
      • 1...Se6!
    • 1.Qc3?
      • threat
        • 2.Qc7#
      • 1...Kf4
        • 2.Qxd4#
      • 1...Bxc3
        • 2.Bg3#
      • 1...Kd6!
  • Keys
    • 1.Qb4!
      • threat
        • 2.Qb8#
      • 1...Kf4
        • 2.Qxd4#
      • 1...Bxb4
        • 2.Bg3#
      • 1...Sc2
        • 2.Bf6#
      • 1...Se2
        • 2.Bf6#
      • 1...Sb3
        • 2.Bf6#
      • 1...Sb5
        • 2.Bf6#
      • 1...Sf5
        • 2.Bf6#
      • 1...Sc6
        • 2.Bf6#
      • 1...Se6
        • 2.Bf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 3
  • Sets
    • B(a);N_GUARD::B(B)
    • B(a);N_GUARD::B(B),XB(a)
  • Tries
    • Try
      • Q(A);P_PINS(c)
      • Threat
        • QAB(A)
      • Vars
        • K(e);N_GUARD,N_SPINS(c),S_FLIGHT::QAR2(A),XS(c)
      • Refutation
        • K(e);N_SPINS(c),S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(e);N_GUARD,S_CUTS(c),S_FLIGHT::QAB1(A)
      • Refutation
        • S(c);P_SPINS(c)
    • Try
      • Q(A);P_PINS(c)
      • Threat
        • QAB(A)
      • Vars
        • K(e);N_GUARD,N_SPINS(c),S_FLIGHT::QAR2(A),XS(c)
        • B(a);N_GUARD,N_SPINS(c),XQ(A)::B(B)
      • Refutation
        • K(e);N_SPINS(c),S_FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAB(A)
    • Vars
      • K(e);N_GUARD,P_SPINS(c),S_FLIGHT::QAR2(A),XS(c)
      • B(a);N_GUARD,XQ(A)::B(B)
      • S(c);::B(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).