MESON Chess Problem Database

Problem Display
PID: 225252 (1rr2N2/Q1n1n2K/2kP1NR1/1p1pPp2/1p6/1b1q1B2/2P5/2R5 w - - 0 1)

Battaglia, Emilio

Suomen Shakki, 1974

1rr2N2/Q1n1n2K/2kP1NR1/1p1pPp2/1p6/1b1q1B2/2P5/2R5

#2

10 + 11

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rd8
      • 2.Qxc7#
    • 1...Re8
      • 2.Qxc7#
    • 1...Rxf8
      • 2.Qxc7#
  • Tries
    • 1.cxd3+?
      • 1...Bc2
        • 2.Rxc2#
      • 1...Bc4!
  • Keys
    • 1.Sxd5!
      • threat
        • 2.Sxb4#
        • 2.Sxe7#
      • 1...Qxd5
        • 2.cxb3#
      • 1...Rxf8
        • 2.Qxc7#
      • 1...Bxd5
        • 2.cxd3#
      • 1...Scxd5
        • 2.dxe7#
      • 1...Sexd5
        • 2.dxc7#
      • 1...Sxg6
        • 2.Sxb4#
        • 2.Se7#
      • 1...Rb6
        • 2.Qxb6#
      • 1...Sg8
        • 2.Sxb4#
        • 2.Se7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • R(k);N_GUARD::QAR1(H),XS(h)
    • R(k);N_GUARD,XS(J)::QAR1(H),XS(h)
  • Tries
    • Try
      • P(B);CHECK,XQ(b)
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::R(A),XB(a)
      • Refutation
        • B(a);P_SPINB(a)
  • Actual
    • S(F);XP(e)
    • Threat
      • DUALS(2)
    • Vars
      • Q(b);N_GUARD,P_SPINQ(b),XS(F)::R(A)+P(B),XB(a)
      • R(k);N_GUARD,XS(J)::QAR1(H),XS(h)
      • B(a);N_GUARD,P_SPINB(a),XS(F)::R(A)+P(B),XQ(b)
      • S(h);N_GUARD,P_SPINS(h),XS(F)::R(G)+P(E),XS(i)
      • S(i);N_GUARD,P_SPINS(i),XS(F)::R(G)+P(E),XS(h)
      • R(j);N_GUARD::QAR1(H),XR(j)
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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).