MESON Chess Problem Database

Problem Display
PID: 243487 (3Q4/B2NR2P/4n3/2pB1p2/1N1knr2/1P6/1K2R3/1b6 w - - 0 1)

Buchwald, Julius

Tijdschrift vd KNSB, 1949

3Q4/B2NR2P/4n3/2pB1p2/1N1knr2/1P6/1K2R3/1b6

#2

10 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sc6+?
      • 1...Kd3
        • 2.Bc4#
      • 1...Kxd5!
    • 1.Se5?
      • threat
        • 2.Sbc6#
        • 2.Sec6#
      • 1...Kxe5
        • 2.h8Q#
        • 2.h8B#
      • 1...Sd6
        • 2.Sec6#
      • 1...Sxd8!
    • 1.Sb8?
      • threat
        • 2.S8c6#
      • 1...Ke5
        • 2.h8Q#
        • 2.h8B#
      • 1...Sxd8!
    • 1.Qh8+?
      • 1...Sf6
        • 2.Qxf6#
      • 1...Sg7!
    • 1.h8Q+?
      • 1...Sf6
        • 2.Qxf6#
      • 1...Sg7!
    • 1.h8B+?
      • 1...Sf6
        • 2.Bxf6#
      • 1...Sg7!
  • Keys
    • 1.Sxc5!
      • threat
        • 2.Sc6#
      • 1...Ke5
        • 2.h8Q#
        • 2.h8B#
      • 1...S4xc5
        • 2.Bxe6#
      • 1...S6xc5
        • 2.Bxe4#
      • 1...Sxd8
        • 2.Sxe4#
      • 1...Sd6
        • 2.Sxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(b);N_SPINP(e),P-FLIGHT::B(E)
      • Refutation
        • K(b);N_SPINP(e),P-FLIGHT,XB(E)
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);N_SPINP(e),P_SPINS(c),S_FLIGHT,XS(G)::P=Q
        • S(c);::S(G)
      • Refutation
        • S(g);XQ(J)
    • Try
      • S(G);
      • Threat
        • S(G)
      • Vars
        • K(b);N_SPINP(e),P_SPINS(c),S_FLIGHT::P=Q
      • Refutation
        • S(g);XQ(J)
    • Try
      • Q(J);CHECK
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::QAB(J),XS(c)
      • Refutation
        • S(g);P_SPINS(g)
    • Try
      • P(I);CHECK
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::QAB(I),XS(c)
      • Refutation
        • S(g);P_SPINS(g)
    • Try
      • P(I);CHECK
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::B(I),XS(c)
      • Refutation
        • S(g);P_SPINS(g)
  • Actual
    • S(G);XP(e)
    • Threat
      • S(D)
    • Vars
      • K(b);P_SPINS(c),S_FLIGHT::P=Q
      • S(c);N_GUARD,P_SPINS(c),XS(G)::QAR(J)+B(E),XS(g)
      • S(g);N_GUARD,P_SPINS(g),XS(G)::QAR(J)+B(E),XS(c)
      • S(g);N_GUARD,XQ(J)::B(F)+S(G),XS(c)
      • S(c);::B(F)+S(G),DCHECK,XS(g)
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).