MESON Chess Problem Database

Problem Display
PID: 180438 (2B5/8/2pp1Np1/3bk3/4n1P1/2P2Q2/r2Bn1K1/4R3 w - - 0 1)

Lider, Valentin Viktorovich

Boletim da UBP, 1990

2B5/8/2pp1Np1/3bk3/4n1P1/2P2Q2/r2Bn1K1/4R3

#2

8 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.Qf4#
    • 1...Sg1
      • 2.Qf4#
    • 1...S2xc3
      • 2.Qxc3#
    • 1...S2g3
      • 2.Qf4#
    • 1...Sd4
      • 2.Qf4#
    • 1...Sf4+
      • 2.Qxf4#
    • 1...S4xc3
      • 2.Bxc3#
    • 1...Sxf6
      • 2.Bf4#
    • 1...g5
      • 2.Qf5#
  • Tries
    • 1.Rxe2?
      • threat
        • 2.Qf4#
      • 1...g5
        • 2.Qf5#
      • 1...Rxd2!
  • Keys
    • 1.g5!
      • threat
        • 2.Sg4#
      • 1...Sf4+
        • 2.Qxf4#
      • 1...S2xc3
        • 2.Qxc3#
      • 1...S4xc3
        • 2.Bxc3#
      • 1...Sxf6
        • 2.Bf4#
      • 1...Bb3
        • 2.Qxe4#
      • 1...Bc4
        • 2.Qxe4#
      • 1...Be6
        • 2.Qxe4#
      • 1...Bf7
        • 2.Qxe4#
      • 1...Bg8
        • 2.Qxe4#
      • 1...Sf2
        • 2.Bf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 5
  • Sets
    • S(b);N_GUARD,P_PINB(B),P_SPINS(c)::QAB1(E)
    • S(b);OGATE,P_PINB(B),P_SPINS(c),XP(D)::QAB(E),XS(b)
    • S(b);CHECK,N_GUARD,P_PINB(B),P_SPINS(c)::QAB1(E),XS(b)
    • S(c);OGATE,P_PINQ(E),P_SPINS(b),XP(D)::B(B),XS(c)
    • S(c);P_PINQ(E),P_SPINS(b),SBLOCK,XS(G)::B(B)
    • P(h);N_GUARD::QAR1(E)
  • Tries
    • Try
      • R(A);P_PINS(c),XS(b)
      • Threat
        • QAB1(E)
      • Vars
        • P(h);N_GUARD::QAR1(E)
      • Refutation
        • R(a);P_PINR(A),XB(B)
  • Actual
    • P(F);
    • Threat
      • S(G)
    • Vars
      • S(b);CHECK,N_GUARD,P_PINB(B),P_SPINS(c)::QAB1(E),XS(b)
      • S(b);OGATE,P_PINB(B),P_SPINS(c),XP(D)::QAB(E),XS(b)
      • S(c);OGATE,P_PINQ(E),P_SPINS(b),XP(D)::B(B),XS(c)
      • S(c);P_PINQ(E),P_SPINS(b),XS(G)::B(B)
      • B(d);N_GUARD::QAR1(E),XS(c)
      • S(c);P_PINQ(E),P_SPINS(b)::B(B)
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).