MESON Chess Problem Database

Problem Display
PID: 241081 (8/8/B1Pp4/KP1q4/RPk2N2/1NP1p3/P7/2R5 w - - 0 1)

Colaneri, Bruno

Best Problems, 2021

8/8/B1Pp4/KP1q4/RPk2N2/1NP1p3/P7/2R5

#2

11 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Qh1
      • 2.b6#
    • 1...Qg2
      • 2.b6#
    • 1...Qf3
      • 2.b6#
    • 1...Qe4
      • 2.b6#
    • 1...Qxc6
      • 2.bxc6#
    • 1...Qe6
      • 2.b6#
    • 1...Qf7
      • 2.b6#
    • 1...Qg8
      • 2.b6#
    • 1...Qd1
      • 2.b6#
    • 1...Qd2
      • 2.b6#
    • 1...Qd3
      • 2.b6#
    • 1...Qd4
      • 2.cxd4#
      • 2.b6#
    • 1...Qxb5+
      • 2.Bxb5#
    • 1...Qc5
      • 2.bxc5#
  • Tries
    • 1.Sd2+?
      • 1...Qxd2
        • 2.b6#
      • 1...exd2!
    • 1.Sc5?
      • threat
        • 2.b6#
      • 1...Qxc6
        • 2.bxc6#
      • 1...Qxc5!
  • Keys
    • 1.Kb6!
      • threat
        • 2.Sa5#
      • 1...Qxc6+
        • 2.bxc6#
      • 1...Qd4+
        • 2.cxd4#
      • 1...Qxb5+
        • 2.Bxb5#
      • 1...Qc5+
        • 2.bxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 10
  • Sets
    • Q(c);N_PINP(I)::B(J)+P(I)
    • Q(c);N_PINP(I),XP(K)::B(J)+P(I),XQ(c)
    • Q(c);CHECK,OGATE,P_SPINQ(c),XP(I)::B(J),XQ(c)
    • Q(c);OGATE::R(E)+P(F),XQ(c)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • Q(c);N_PINP(I),XS(C)::B(J)+P(I)
      • Refutation
        • P(a);XS(C)
    • Try
      • S(C);N_SPINP(I)
      • Threat
        • B(J)+P(I)
      • Vars
        • Q(c);OGATE,XP(K)::B(J)+P(I),XQ(c)
      • Refutation
        • Q(c);P_PINP(I),XS(C)
  • Actual
    • K(H);N_SPINP(I),S_FLIGHT
    • Threat
      • S(C)
    • Vars
      • Q(c);CHECK,OGATE,XP(K)::B(J)+P(I),XQ(c)
      • Q(c);CHECK,OGATE::R(A)+P(D),XQ(c)
      • Q(c);CHECK,OGATE,P_SPINQ(c),XP(I)::B(J),XQ(c)
      • Q(c);CHECK,OGATE::R(E)+P(F),XQ(c)
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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).