MESON Chess Problem Database

Problem Display
PID: 95647 (2B5/1R2Npp1/ppPk1nnQ/3P1p1r/7p/5N1b/4K1P1/B1R5 w - - 0 1)

Fasano, Alessandro

L'Italia Scacchistica, 1997

2B5/1R2Npp1/ppPk1nnQ/3P1p1r/7p/5N1b/4K1P1/B1R5

#2

11 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Se4
      • 2.Be5#
      • 2.Rd7#
    • 1...Sg4
      • 2.Rd7#
    • 1...Sxd5
      • 2.Be5#
    • 1...Sd7
      • 2.Rxd7#
    • 1...Sh7
      • 2.Be5#
      • 2.Rd7#
    • 1...Se8
      • 2.Be5#
      • 2.Rd7#
    • 1...Sg8
      • 2.Be5#
      • 2.Rd7#
    • 1...Sf4+
      • 2.Qxf4#
    • 1...Se5
      • 2.Bxe5#
    • 1...Sxe7
      • 2.Rd7#
    • 1...Sf8
      • 2.Be5#
      • 2.Qf4#
    • 1...Sh8
      • 2.Be5#
      • 2.Rd7#
      • 2.Qf4#
  • Tries
    • 1.Bb2?
      • threat
        • 2.Ba3#
      • 1...Sf4+
        • 2.Qxf4#
      • 1...Sxd5
        • 2.Be5#
      • 1...Sxe7
        • 2.Rd7#
      • 1...Sd7
        • 2.Rxd7#
      • 1...Se4
        • 2.Be5#
        • 2.Rd7#
      • 1...b5!
    • 1.Bxf6?
      • threat
        • 2.Be5#
        • 2.Rd7#
      • 1...Sf4+
        • 2.Qxf4#
      • 1...Rxh6
        • 2.Rd7#
      • 1...Sxe7
        • 2.Rd7#
      • 1...gxf6
        • 2.Rd7#
      • 1...gxh6
        • 2.Rd7#
      • 1...Se5
        • 2.Bxe5#
      • 1...Sf8
        • 2.Be5#
        • 2.Qf4#
      • 1...f4!
    • 1.Qd2?
      • threat
        • 2.Qb4#
      • 1...Sf4+
        • 2.Qxf4#
      • 1...Sxd5
        • 2.Qxd5#
      • 1...Sxe7
        • 2.Be5#
      • 1...Sd7
        • 2.Rxd7#
      • 1...Se4
        • 2.Rd7#
      • 1...a5!
    • 1.Qf4+?
      • 1...Se5
        • 2.Bxe5#
        • 2.Qxe5#
        • 2.Qb4#
      • 1...Sxf4+!
    • 1.Qxg6?
      • threat
        • 2.Be5#
        • 2.Rd7#
      • 1...fxg6
        • 2.Be5#
      • 1...f4!
  • Keys
    • 1.Qe3!
      • threat
        • 2.Qa3#
      • 1...Sf4+
        • 2.Qxf4#
      • 1...Sxd5
        • 2.Rd7#
      • 1...Sxe7
        • 2.Qe5#
      • 1...Se4
        • 2.Rd7#
      • 1...Sd7
        • 2.Rxd7#
      • 1...b5
        • 2.Qc5#

This is a version

Version by J M Rice.

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • S(h);N_GUARD,P_SPINS(i)::R1(I)
    • S(h);P_SPINS(i),XP(F)::B(A)
    • S(h);N_GUARD,P_SPINS(i)::R1(I),XS(h)
    • S(i);CHECK,N_GUARD,P_SPINS(h)::QAB(H),XS(i)
    • S(i);N_GUARD,P_SPINS(h)::B(A),XS(i)
    • S(i);P_SPINS(h),XS(J)::R1(I)
  • Tries
    • Try
      • B(A);
      • Threat
        • B(A)
      • Vars
        • S(i);CHECK,N_GUARD,P_SPINS(h)::QAB(H),XS(i)
        • S(h);P_SPINS(i),XP(F)::B(A)
        • S(i);P_SPINS(h),XS(J)::R1(I)
        • S(h);N_GUARD,P_SPINS(i)::R1(I),XS(h)
      • Refutation
        • P(f);
    • Try
      • B(A);XS(h)
      • Threat
        • DUALS(2)
      • Vars
        • S(i);CHECK,N_GUARD::QAB(H),XS(i)
        • R(d);XQ(H)::R1(I)
        • S(i);XS(J)::R1(I)
        • P(k);XB(A)::R1(I)
        • P(k);XQ(H)::R1(I)
        • S(i);::QAR(H)+B(A),DCHECK,XS(i)
      • Refutation
        • P(c);
    • Try
      • Q(H);
      • Threat
        • QAB(H)
      • Vars
        • S(i);CHECK,N_GUARD::QAB(H),XS(i)
        • S(h);OGATE,P_SPINS(h),XP(F)::QAR1(H),XS(h)
        • S(i);N_GUARD,XS(J)::B(A)
        • S(h);N_GUARD::R1(I),XS(h)
        • S(h);N_GUARD::R1(I)
      • Refutation
        • P(e);
    • Try
      • Q(H);CHECK
      • Refutation
        • S(i);CHECK,XQ(H)
    • Try
      • Q(H);P_PINS(h),XS(i)
      • Threat
        • DUALS(2)
      • Vars
        • P(j);N_SPINS(h),XQ(H)::B(A)
      • Refutation
        • P(c);
  • Actual
    • Q(H);
    • Threat
      • QAB(H)
    • Vars
      • S(i);CHECK,N_GUARD::QAB(H),XS(i)
      • S(h);N_GUARD,XP(F)::R1(I)
      • S(i);N_GUARD,XS(J)::QAB1(H)
      • S(h);N_GUARD::R1(I)
      • S(h);N_GUARD::R1(I),XS(h)
      • P(f);N_GUARD::QAB1(H)
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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).