MESON Chess Problem Database

Problem Display
PID: 275890 (B3N3/1n5Q/2NBp3/2Pk4/q6b/2Rn1P2/1Pb5/3R1K2 w - - 0 1)

Atanasio, A

Probleemblad, 1953

B3N3/1n5Q/2NBp3/2Pk4/q6b/2Rn1P2/1Pb5/3R1K2

#2

11 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc6
      • 2.Qxb7#
    • 1...Qb3
      • 2.Qe4#
    • 1...Qb5
      • 2.Qe4#
    • 1...Qxc6
      • 2.Qe4#
    • 1...Qa1
      • 2.Qe4#
    • 1...Qa2
      • 2.Qe4#
    • 1...Qa3
      • 2.Qe4#
    • 1...Qe4
      • 2.Qxe4#
    • 1...Qa5
      • 2.Qe4#
    • 1...Qa6
      • 2.Qe4#
    • 1...Qa7
      • 2.Qe4#
    • 1...Qxa8
      • 2.Qe4#
    • 1...Sa5
      • 2.Sc7#
    • 1...Sxc5
      • 2.Rxc5#
    • 1...Sxd6
      • 2.Sc7#
    • 1...Sd8
      • 2.Sc7#
  • Tries
    • 1.Sb4+?
      • 1...Kd4
        • 2.Qe4#
      • 1...Qxb4!
    • 1.Se7+?
      • 1...Kd4
        • 2.Qe4#
      • 1...Bxe7!
    • 1.Sf6+?
      • 1...Kxc6
        • 2.Qxb7#
        • 2.Qd7#
      • 1...Bxf6!
    • 1.Bxb7?
      • threat
        • 2.Sc7#
      • 1...Qxc6
        • 2.Qe4#
      • 1...Qa5
        • 2.Qe4#
      • 1...Bd8!
    • 1.Rdxd3+?
      • 1...Kxc6
        • 2.Qxb7#
      • 1...Qd4
        • 2.Sb4#
        • 2.Qe4#
      • 1...Bxd3+!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Qe4#
      • 1...Kxd4
        • 2.Qe4#
      • 1...Qxd4
        • 2.Bxb7#
        • 2.Qxb7#
      • 1...Sxb2
        • 2.Sc7#
      • 1...Sxc5
        • 2.Rxc5#
      • 1...Sc1
        • 2.Sc7#
      • 1...Se1
        • 2.Sc7#
      • 1...Sf2
        • 2.Sc7#
      • 1...Sb4
        • 2.Sc7#
      • 1...Sf4
        • 2.Sc7#
      • 1...Se5
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 16
  • Sets
    • K(e);N_SPINS(b),OGATEB,P_SPINS(g),S_FLIGHT,XS(G)::QAB1(I),XS(g)
    • Q(c);N_GUARD::QAB1(I)
    • Q(c);N_GUARD,SBLOCK,XS(G)::QAB1(I)
    • Q(c);N_GUARD,P_PINR(A)::QAB1(I)
    • Q(c);N_GUARD::QAB1(I),XQ(c)
    • Q(c);N_GUARD,XB(J)::QAB1(I)
    • S(g);::S(K)
    • S(g);OGATE,XP(F)::R1(D),XS(g)
    • S(g);XB(H)::S(K)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(e);P-FLIGHT::QAR1(I)
      • Refutation
        • Q(c);XS(G)
    • Try
      • S(G);CHECK
      • Vars
        • K(e);P-FLIGHT::QAR1(I)
      • Refutation
        • B(d);XS(G)
    • Try
      • S(K);CHECK
      • Refutation
        • B(d);XS(K)
    • Try
      • B(J);XS(g)
      • Threat
        • S(K)
      • Vars
        • Q(c);N_GUARD,P_SPINQ(c),XS(G)::QAB1(I)
        • Q(c);N_GUARD::QAB1(I)
      • Refutation
        • B(d);
    • Try
      • R(A);CHECK,XS(b)
      • Vars
        • K(e);P_SPINS(g),S_CUTB(a),S_CUTQ(c),S_FLIGHT,XS(G)::QAB1(I),XS(g)
      • Refutation
        • B(a);CHECK,XR(A)
  • Actual
    • S(G);N_PINS(b),P_PINS(g)
    • Threat
      • QAB1(I)
    • Vars
      • K(e);N_SPINS(g),P-FLIGHT,P_SPINS(b),XS(G)::QAR1(I)
      • S(b);XP(C)::S(K)
      • S(b);OGATE,XP(F)::R1(D),XS(b)
      • S(b);::S(K)
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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).