MESON Chess Problem Database

Problem Display
PID: 72688 (B3rb2/3N1Q2/1rn1p1P1/1p1n2P1/R1P1kpPK/7R/2P1Np2/2q5 w - - 0 1)

Foschini, Ettore

Pasqualini, Giulio

2/3 Prize, L'Alfiere di Re, 1922-1923

B3rb2/3N1Q2/1rn1p1P1/1p1n2P1/R1P1kpPK/7R/2P1Np2/2q5

#2

12 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Se3
      • 2.Qxf4#
    • 1...Sde7
      • 2.Qxe6#
    • 1...Sd4
      • 2.Sc3#
    • 1...Se5
      • 2.Sf6#
    • 1...Sce7
      • 2.cxb5#
    • 1...f3
      • 2.Qxf3#
    • 1...e5
      • 2.Qxd5#
      • 2.Qf5#
  • Tries
    • 1.Sc3+?
      • 1...Kd4
        • 2.Rd3#
      • 1...Sxc3!
    • 1.Qxe6+?
      • 1...Se5
        • 2.Sf6#
        • 2.Bxd5#
        • 2.Qxd5#
        • 2.Qf5#
      • 1...Rxe6!
  • Keys
    • 1.g7!
      • threat
        • 2.Qg6#
      • 1...f3
        • 2.Qxf3#
      • 1...Se3
        • 2.Qxf4#
      • 1...Sde7
        • 2.Qxe6#
      • 1...Sd4
        • 2.Sc3#
      • 1...Se5
        • 2.Sf6#
      • 1...Sce7
        • 2.cxb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(f);N_GUARD,P_SPINS(h),S_CUTQ(a)::QAR1(K),XP(d)
    • S(f);P_SPINS(h),S_CUTR(j)::QAR2(K),XP(i)
    • S(h);P_SPINS(f),SBLOCK::S(B)
    • S(h);P_SPINS(f),SBLOCK::S(J)
    • S(h);N_GUARD,P_SPINS(f),S_CUTB(k)::R(D)+P(E),XP(e)
    • P(d);OGATE::QAB1(K),XP(d)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(c);P-FLIGHT::R1(C)
      • Refutation
        • S(f);P_SPINS(h),XS(B)
    • Try
      • Q(K);CHECK,XP(i)
      • Refutation
        • R(j);XQ(K)
  • Actual
    • P(I);
    • Threat
      • QAB(K)
    • Vars
      • P(d);OGATE::QAB1(K),XP(d)
      • S(f);N_GUARD,P_SPINS(h),S_CUTQ(a)::QAR1(K),XP(d)
      • S(f);P_SPINS(h),S_CUTR(j)::QAR2(K),XP(i)
      • S(h);P_SPINS(f),SBLOCK::S(B)
      • S(h);P_SPINS(f),SBLOCK::S(J)
      • S(h);N_GUARD,P_SPINS(f),S_CUTB(k)::R(D)+P(E),XP(e)
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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).