MESON Chess Problem Database

Problem Display
PID: 206336 (2R2B2/2b5/1N3R2/8/1p6/nNknr1Q1/Ppp1P1bK/8 w - - 0 1)

Salamanca, Tomas

Comm., Centurini/Guidelli MT, 1925

2R2B2/2b5/1N3R2/8/1p6/nNknr1Q1/Ppp1P1bK/8

#2

9 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Qxd3#
    • 1...Sc4
      • 2.Sa4#
    • 1...Sf4
      • 2.Qe1#
    • 1...Se5
      • 2.Qe1#
  • Tries
    • 1.Rxc7+?
      • 1...Sc4
        • 2.Sa4#
        • 2.Rxc4#
      • 1...Sc5
        • 2.Qe1#
        • 2.Qxe3#
      • 1...Bc6!
  • Keys
    • 1.Bg7!
      • threat
        • 2.Rc6#
      • 1...Re5
        • 2.Qxd3#
      • 1...Re6
        • 2.Rxe6#
      • 1...Bc6
        • 2.Rxc6#
      • 1...Sc4
        • 2.Sa4#
      • 1...Sc5
        • 2.Rd6#
      • 1...Se5
        • 2.Qe1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(g);N_PINQ(E),P_SPINS(f)::QAR1(E),XS(f)
    • S(d);N_SPINB(i),SBLOCK::S(F)
    • S(f);N_PINQ(E),P_SPINR(g)::QAB(E)
  • Tries
    • Try
      • R(H);CHECK,N_SPINQ(E),XB(i)
      • Refutation
        • B(c);P_SPINB(c)
  • Actual
    • B(I);
    • Threat
      • B(I)+R(G),DCHECK
    • Vars
      • R(g);N_PINQ(E),P_SPINS(f)::QAR1(E),XS(f)
      • R(g);N_GUARD,P_SPINS(f)::B(I)+R(G),XR(g)
      • B(c);N_SPINB(i)::B(I)+R(G),DCHECK,XB(c)
      • S(d);N_SPINB(i),SBLOCK::S(F)
      • S(f);N_GUARD,N_SPINB(i),P_SPINR(g)::B(I)+R(G)
      • S(f);N_PINQ(E),P_SPINR(g)::QAB(E)
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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).