MESON Chess Problem Database

Problem Display
PID: 100943 (Q7/rp4RP/3p2KB/2p5/1n4Bp/Rp3Pkp/b1P2rpb/3N2q1 w - - 0 1)

Fontana, Alessandro

Good Companions, 1919

Q7/rp4RP/3p2KB/2p5/1n4Bp/Rp3Pkp/b1P2rpb/3N2q1

#2

10 + 14

6490 yacpdb 2009
3713 Snap 2024

SOLUTION

  • SOUND
  • Sets
    • 1...d5
      • 2.Qb8#
  • Tries
    • 1.Kf5?
      • threat
        • 2.Bh5#
        • 2.Bf4#
      • 1...Sd3
        • 2.Bh5#
      • 1...Sd5
        • 2.Bh5#
      • 1...b5
        • 2.Bf4#
      • 1...b6
        • 2.Bf4#
      • 1...Rxf3+!
    • 1.Kf6?
      • threat
        • 2.Bh5#
      • 1...Rxf3+
        • 2.Bf5#
      • 1...b5
        • 2.Bd7#
      • 1...b6
        • 2.Bd7#
      • 1...Sd5+!
  • Keys
    • 1.Kf7!
      • threat
        • 2.Bh5#
      • 1...Rxf3+
        • 2.Bf5#
      • 1...bxc2+
        • 2.Be6#
      • 1...b2+
        • 2.Be6#
      • 1...b5+
        • 2.Bd7#
      • 1...b6+
        • 2.Bd7#

Anticipated by 275864(1919)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • P(l);OGATEB::QAB(J)
  • Tries
    • Try
      • K(F);P_SPINP(D),S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • S(i);::R(H)+B(E)
        • P(n);::B(G)
      • Refutation
        • R(c);CHECK,XP(D)
    • Try
      • K(F);P-FLIGHT,P_SPINP(D)
      • Threat
        • R(H)+B(E)
      • Vars
        • R(c);CHECK,SBLOCK,XP(D)::R(H)+B(E)
        • P(n);::R(H)+B(E)
      • Refutation
        • S(i);CHECK
  • Actual
    • K(F);P_SPINP(D),S_FLIGHT
    • Threat
      • R(H)+B(E)
    • Vars
      • R(c);CHECK,SBLOCK,XP(D)::R(H)+B(E)
      • P(f);CHECK,XP(B)::R(H)+B(E)
      • P(f);CHECK::R(H)+B(E)
      • P(n);CHECK::R(H)+B(E)
HTML5 logo

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).