MESON Chess Problem Database

Problem Display
PID: 174027 (K3BB2/8/2N5/7p/1R5r/kr3n1R/p1p4b/Qb5q w - - 0 1)

Bottacchi, Antonio

2nd Prize, L'Italia Scacchistica, 1923

K3BB2/8/2N5/7p/1R5r/kr3n1R/p1p4b/Qb5q

#2

7 + 10

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rb2
      • 2.Qxb2#
    • 1...Rc3
      • 2.Qb2#
      • 2.Qxc3#
    • 1...Rd3
      • 2.Qb2#
    • 1...Re3
      • 2.Qb2#
    • 1...Se1
      • 2.Rhxb3#
      • 2.Rf4#
    • 1...Sg1
      • 2.Rhxb3#
      • 2.Rf4#
    • 1...Sd2
      • 2.Rf4#
    • 1...Se5
      • 2.Rhxb3#
      • 2.Rc4#
      • 2.Rd4#
      • 2.Re4#
      • 2.Rf4#
      • 2.Rg4#
      • 2.Rbxh4#
    • 1...Sg5
      • 2.Rhxb3#
      • 2.Rf4#
  • Tries
    • 1.Rxb3+?
      • 1...Kxb3
        • 2.Sa5#
      • 1...Ka4!
  • Keys
    • 1.Se5!
      • threat
        • 2.Ra4#
      • 1...Se1+
        • 2.Re4#
      • 1...Sg1+
        • 2.Re4#
      • 1...Sd2+
        • 2.Re4#
      • 1...Sd4+
        • 2.Rb7#
      • 1...Sxe5+
        • 2.Re4#
      • 1...Sg5+
        • 2.Re4#
      • 1...Rbxb4
        • 2.Qc3#
      • 1...Rhxb4
        • 2.Sc4#
      • 1...Rb2
        • 2.Qxb2#
      • 1...Rc3
        • 2.Qb2#
        • 2.Qxc3#
      • 1...Rd3
        • 2.Qb2#
      • 1...Re3
        • 2.Qb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • R(g);N_GUARD,P_SPINS(h)::QAB1(A),XR(g)
    • R(g);N_GUARD::QAB1(A)
    • S(h);P_PINS(D),P_SPINR(g)::B(G)+R(C)
  • Tries
    • Try
      • R(C);CHECK,XR(g)
      • Vars
        • K(f);N_SPINP(c),P-FLIGHT,P_SPINS(h),XR(C)::S(D)
      • Refutation
        • K(f);P-FLIGHT
  • Actual
    • S(D);
    • Threat
      • B(G)+R(C),DCHECK
    • Vars
      • S(h);CHECK,P_SPINR(g)::B(G)+R(C)
      • S(h);CHECK,P_SPINR(g),S_CUTR(i)::B(G)+R(C)
      • S(h);CHECK,P_SPINR(g),XS(D)::B(G)+R(C)
      • R(g);OGATEB,P_SPINR(g),P_SPINS(h),XR(C)::QAR2(A)
      • R(i);N_GUARD,P_SPINR(i),XR(C)::S(D)
      • R(g);N_GUARD,P_SPINS(h)::QAB1(A),XR(g)
      • R(g);N_GUARD::QAB1(A)
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).