MESON Chess Problem Database

Problem Display
PID: 99016 (r7/2N1Npp1/3B1kBp/8/1pp4P/8/bb5n/Q6K w - - 0 1)

Bakcsi, Gyorgy

Varsoi Sakkor, 1982

r7/2N1Npp1/3B1kBp/8/1pp4P/8/bb5n/Q6K

#2

7 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bd4
      • 2.Qxd4#
    • 1...Be5
      • 2.Qxe5#
    • 1...Sf1
      • 2.Qxf1#
  • Tries
    • 1.Se8+?
      • 1...Ke6
        • 2.Bf5#
      • 1...Rxe8!
    • 1.Qb1?
      • threat
        • 2.Sed5#
        • 2.Qf5#
      • 1...fxg6
        • 2.Qxg6#
      • 1...Ra5
        • 2.Sg8#
      • 1...c3
        • 2.Qf5#
      • 1...Bxb1!
    • 1.Qf1+?
      • 1...Sf3
        • 2.Qxf3#
      • 1...Sxf1!
    • 1.Qg1?
      • threat
        • 2.Sed5#
      • 1...fxg6
        • 2.Qxg6#
      • 1...Ra5
        • 2.Sg8#
      • 1...c3
        • 2.Qd4#
      • 1...Sg4!
  • Keys
    • 1.Qe1!
      • threat
        • 2.Scd5#
      • 1...fxg6
        • 2.Qe6#
      • 1...Ra5
        • 2.Se8#
      • 1...Be5
        • 2.Qxe5#
      • 1...c3
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • B(b);OGATE::QAB(A),XB(b)
    • B(b);OGATE::QAB1(A),XB(b)
    • S(c);N_GUARD::QAR(A),XS(c)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(f);N_SPINB(b),P-FLIGHT::B(E)
      • Refutation
        • R(j);XS(F)
    • Try
      • Q(A);N_PINB(b)
      • Threat
        • DUALS(2)
      • Vars
        • P(h);OGATE,XB(E)::QAR1(A),XP(h)
        • R(j);N_GUARD::S(G)
        • P(e);::QAR1(A)
      • Refutation
        • B(a);XQ(A)
    • Try
      • Q(A);CHECK,N_PINB(b)
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::QAR(A),XS(c)
      • Refutation
        • S(c);XQ(A)
    • Try
      • Q(A);N_PINB(b)
      • Threat
        • S(G)
      • Vars
        • P(h);OGATE,XB(E)::QAR1(A),XP(h)
        • R(j);N_GUARD::S(G)
        • P(e);S_CUTB(b)::QAB(A)
      • Refutation
        • S(c);
  • Actual
    • Q(A);N_PINB(b)
    • Threat
      • S(F)
    • Vars
      • P(h);N_GUARD,XB(E)::QAR1(A)
      • R(j);N_GUARD::S(F)
      • B(b);N_GUARD::QAB1(A),XB(b)
      • P(e);S_CUTB(b)::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).