MESON Chess Problem Database

Problem Display
PID: 258043 (2b5/K1P2N2/1Q4PB/3Ppk1P/6nR/4n3/4P3/5NqB w - - 0 1)

Scholten, JW

Probleemblad, 1948

2b5/K1P2N2/1Q4PB/3Ppk1P/6nR/4n3/4P3/5NqB

#2

12 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Qxh1
      • 2.Sg3#
    • 1...Qg3
      • 2.Sxg3#
    • 1...Ba6
      • 2.Qe6#
    • 1...Be6
      • 2.Qxe6#
    • 1...Bb7
      • 2.Qe6#
    • 1...Sd1
      • 2.e4#
    • 1...Sxf1
      • 2.e4#
    • 1...Sc2
      • 2.e4#
    • 1...Sg2
      • 2.Sg3#
    • 1...Sc4
      • 2.e4#
    • 1...Sxd5
      • 2.e4#
    • 1...Sf2
      • 2.Sxe3#
    • 1...Sh2
      • 2.Be4#
    • 1...Sf6
      • 2.Sd6#
    • 1...Sxh6
      • 2.Be4#
  • Tries
    • 1.Sxe3+?
      • 1...Sxe3
        • 2.Be4#
      • 1...Qxe3!
    • 1.Qf6+?
      • 1...Sxf6
        • 2.Sd6#
      • 1...Kxf6!
  • Keys
    • 1.g7!
      • threat
        • 2.Qg6#
      • 1...Sxf1
        • 2.e4#
      • 1...Sxd5
        • 2.e4#
      • 1...Sxh6
        • 2.Be4#
      • 1...Be6
        • 2.Qxe6#
      • 1...Sg2
        • 2.Sg3#
      • 1...Sd1
        • 2.e4#
      • 1...Sc2
        • 2.e4#
      • 1...Sc4
        • 2.e4#
      • 1...Sf2
        • 2.Sxe3#
      • 1...Sh2
        • 2.Be4#
      • 1...Sf6
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • Q(a);N_GUARD,XB(B)::S(A)
    • Q(a);N_GUARD::S(A),XQ(a)
    • B(f);N_GUARD::QAB1(G)
    • B(f);N_GUARD::QAB1(G),XB(f)
    • S(b);OGATE,P_PINQ(G)::P(C)
    • S(b);OGATE,P_PINQ(G),XS(A)::P(C)
    • S(b);P_PINQ(G),S_CUTQ(a)::S(A)
    • S(b);OGATE,P_PINQ(G),XP(E)::P(C)
    • S(c);N_GUARD,S_CUTQ(a)::S(A),XS(b)
    • S(c);::B(B)
    • S(c);SBLOCK::S(L)
    • S(c);XB(I)::B(B)
  • Tries
    • Try
      • S(A);CHECK,XS(b)
      • Vars
        • S(c);XS(A)::B(B)
      • Refutation
        • Q(a);P_PINQ(G),XS(A)
    • Try
      • Q(G);CHECK
      • Vars
        • S(c);SBLOCK,XQ(G)::S(L)
      • Refutation
        • K(e);P-FLIGHT,XQ(G)
  • Actual
    • P(H);
    • Threat
      • QAB1(G)
    • Vars
      • S(b);OGATE,P_PINQ(G),XS(A)::P(C)
      • S(b);OGATE,P_PINQ(G),XP(E)::P(C)
      • S(c);XB(I)::B(B)
      • B(f);N_GUARD::QAB1(G),XB(f)
      • S(b);P_PINQ(G),S_CUTQ(a)::S(A)
      • S(b);OGATE,P_PINQ(G)::P(C)
      • S(c);N_GUARD,S_CUTQ(a)::S(A),XS(b)
      • S(c);::B(B)
      • S(c);SBLOCK::S(L)
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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).