MESON Chess Problem Database

Problem Display
PID: 244719 (4b3/8/2q5/2P5/RB1kPPN1/1P2R3/2K1P3/3B2Q1 w - - 0 1)

Colaneri, Bruno

Candela MT (Problemas), 2018

4b3/8/2q5/2P5/RB1kPPN1/1P2R3/2K1P3/3B2Q1

#2

12 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe4+
      • 2.Rd3#
    • 1...Qxc5+
      • 2.Bc3#
  • Tries
    • 1.Sh2?
      • threat
        • 2.Sf3#
      • 1...Qxe4+
        • 2.Rd3#
      • 1...Qxc5+
        • 2.Bc3#
      • 1...Bh5!
    • 1.Sf6?
      • threat
        • 2.Rc3#
        • 2.Rd3#
        • 2.Rf3#
        • 2.Rg3#
        • 2.Rh3#
      • 1...Qxe4+
        • 2.Rd3#
        • 2.Rxe4#
      • 1...Qxc5+
        • 2.Bc3#
        • 2.Rc3#
      • 1...Qxf6!
    • 1.Ra5?
      • threat
        • 2.Bc3#
      • 1...Qxe4+
        • 2.Rd3#
      • 1...Qxc5+
        • 2.Bxc5#
      • 1...Qb5!
    • 1.Qe1?
      • threat
        • 2.Qd2#
        • 2.Qc3#
      • 1...Qxc5+
        • 2.Bc3#
      • 1...Qb5
        • 2.Qc3#
      • 1...Qa6
        • 2.Qc3#
      • 1...Qxe4+!
    • 1.Qh1?
      • threat
        • 2.Rd3#
      • 1...Qxe4+
        • 2.Qxe4#
      • 1...Qxc5+
        • 2.Bc3#
      • 1...Qb5
        • 2.Qh8#
      • 1...Qa6!
  • Keys
    • 1.Se5!
      • threat
        • 2.Sf3#
      • 1...Qxe4+
        • 2.Rd3#
      • 1...Qxc5+
        • 2.Bc3#
      • 1...Bh5
        • 2.Sxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • Q(b);CHECK,N_PINP(L),SBLOCK,XP(I)::QAB(B)+R(F),DCHECK
    • Q(b);CHECK,SBLOCK,XP(L)::R(G)+B(H),DCHECK
  • Tries
    • Try
      • S(K);
      • Threat
        • S(K)
      • Vars
        • Q(b);CHECK,N_PINP(L),SBLOCK,XP(I)::QAB(B)+R(F),DCHECK
        • Q(b);CHECK,SBLOCK,XP(L)::R(G)+B(H),DCHECK
      • Refutation
        • B(c);
    • Try
      • S(K);
      • Threat
        • DUALS(5)
      • Refutation
        • Q(b);N_PINP(L),XS(K)
    • Try
      • R(G);
      • Threat
        • B(H)
      • Vars
        • Q(b);CHECK,N_PINP(L),SBLOCK,XP(I)::QAB(B)+R(F),DCHECK
        • Q(b);CHECK,OGATE,XP(L)::B(H),XQ(b)
      • Refutation
        • Q(b);N_PINP(L)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);CHECK,SBLOCK,XP(L)::R(G)+B(H),DCHECK
        • Q(b);N_PINP(L)::QAB1(B)
      • Refutation
        • Q(b);CHECK,N_PINP(L),XP(I)
    • Try
      • Q(B);
      • Threat
        • R1(F)
      • Vars
        • Q(b);CHECK,N_PINP(L),OGATE,XP(I)::QAR1(B),XQ(b)
        • Q(b);CHECK,SBLOCK,XP(L)::R(G)+B(H),DCHECK
        • Q(b);N_GUARD,N_PINP(L)::QAB(B)
      • Refutation
        • Q(b);N_PINP(L)
  • Actual
    • S(K);
    • Threat
      • S(K)
    • Vars
      • Q(b);CHECK,N_PINP(L),SBLOCK,XP(I)::QAB(B)+R(F),DCHECK
      • Q(b);CHECK,SBLOCK,XP(L)::R(G)+B(H),DCHECK
      • B(c);N_GUARD::S(K),XQ(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).