MESON Chess Problem Database

Problem Display
PID: 198251 (4n3/2pQ4/3p2r1/3k1rp1/1P2Rb1q/n1B3pP/K2pP3/3N1B2 w - - 0 1)

Solivella, Nicandro

Comm., Club Argentino de Ajedrez, 1920

4n3/2pQ4/3p2r1/3k1rp1/1P2Rb1q/n1B3pP/K2pP3/3N1B2

#2

9 + 12

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe4
      • 2.Bg2#
    • 1...Re5
      • 2.Rd4#
    • 1...c5
      • 2.Qb7#
  • Tries
    • 1.Qb5+?
      • 1...Kxe4
        • 2.Bg2#
        • 2.Qd3#
      • 1...c5
        • 2.Qb7#
      • 1...Sxb5!
  • Keys
    • 1.Rc4!
      • threat
        • 2.e4#
      • 1...Kxc4
        • 2.e4#
      • 1...Sxc4
        • 2.Bg2#
      • 1...Be5
        • 2.Se3#
      • 1...Re5
        • 2.Rd4#
      • 1...Re6
        • 2.Qc6#
      • 1...Be3
        • 2.Sxe3#
      • 1...Sf6
        • 2.Qf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 2
  • Sets
    • K(f);N_SPINP(i),OGATEB,S_FLIGHT,XR(H)::B(B)
    • R(g);SBLOCK::R1(H)
    • P(k);OGATE::QAB(I)
  • Tries
    • Try
      • Q(I);CHECK,N_PINP(i)
      • Vars
        • P(k);N_GUARD,P_SPINP(k)::QAB(I)
      • Refutation
        • S(b);XQ(I)
  • Actual
    • R(H);
    • Threat
      • P(D)
    • Vars
      • K(f);N_SPINP(i),S_FLIGHT,XR(H)::B(B)+P(D)
      • S(b);SBLOCK,XR(H)::B(B)
      • B(d);N_GUARD::S(A)
      • R(g);SBLOCK::R1(H)
      • R(j);SBLOCK::QAB1(I)
      • B(d);N_GUARD::S(A),XB(d)
      • S(l);S_CUTR(g),S_CUTR(j)::QAB(I)
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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).