MESON Chess Problem Database

Problem Display
PID: 269769 (Q2N3B/4Kb2/N3p3/1p2np2/1P1k4/1P1np2p/2R3r1/3R3B w - - 0 1)

Simoni, Francesco

Due Alfieri, 1983

Q2N3B/4Kb2/N3p3/1p2np2/1P1k4/1P1np2p/2R3r1/3R3B

#2

10 + 10

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Rg1
      • 2.Sc6#
      • 2.Qa7#
    • 1...Rd2
      • 2.Sc6#
    • 1...Re2
      • 2.Sc6#
      • 2.Qa7#
    • 1...Rf2
      • 2.Sc6#
      • 2.Qa7#
    • 1...Rh2
      • 2.Sc6#
      • 2.Qa7#
    • 1...Rg3
      • 2.Sc6#
      • 2.Qa7#
    • 1...Rg4
      • 2.Sc6#
      • 2.Qa7#
    • 1...Rg5
      • 2.Sc6#
      • 2.Qa7#
    • 1...Rg6
      • 2.Sc6#
      • 2.Qa7#
    • 1...Rg7
      • 2.Qa7#
    • 1...Rg8
      • 2.Sc6#
      • 2.Qa7#
    • 1...Bh5
      • 2.Sxe6#
    • 1...Bg6
      • 2.Sxe6#
    • 1...Be8
      • 2.Sxe6#
  • Tries
    • 1.Kd6?
      • threat
        • 2.Bxe5#
      • 1...Rd2
        • 2.Sc6#
      • 1...Rg7
        • 2.Qa7#
      • 1...e2!
    • 1.Sc7?
      • threat
        • 2.Sxb5#
      • 1...Be8
        • 2.Scxe6#
        • 2.Sdxe6#
      • 1...e2!
    • 1.Sxf7?
      • threat
        • 2.Bxe5#
      • 1...Rd2
        • 2.Qd8#
      • 1...Rg7
        • 2.Qa7#
      • 1...e2!
    • 1.Bxg2?
      • threat
        • 2.Sc6#
        • 2.Qa7#
      • 1...e2
        • 2.Qa7#
      • 1...Be8
        • 2.Sxe6#
        • 2.Qa7#
      • 1...hxg2!
    • 1.Qxg2?
      • threat
        • 2.Sc6#
      • 1...e2
        • 2.Qg1#
        • 2.Qf2#
      • 1...Be8
        • 2.Sxe6#
      • 1...hxg2!
    • 1.Qf3?
      • threat
        • 2.Sc6#
      • 1...Rg7
        • 2.Qf4#
      • 1...Be8
        • 2.Sxe6#
      • 1...Rxc2!
    • 1.Qb8?
      • threat
        • 2.Qxe5#
      • 1...Kd5
        • 2.Qxe5#
      • 1...Rd2
        • 2.Sc6#
        • 2.Qd6#
      • 1...Rg7
        • 2.Qd6#
        • 2.Qa7#
        • 2.Qb6#
      • 1...Ke4!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Rxd3#
      • 1...Rd2
        • 2.Sc6#
      • 1...Rg7
        • 2.Qa1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • R(a);N_SPINS(b),P_SPINS(g)::S(I)
    • R(a);::QAB(H)
    • B(j);N_GUARD::S(I),XP(i)
  • Tries
    • Try
      • K(G);S_FLIGHT
      • Threat
        • B(J),XS(g)
      • Vars
        • R(a);N_SPINS(b),P_SPINS(g)::S(I)
        • R(a);::QAB(H)
      • Refutation
        • P(c);
    • Try
      • S(F);
      • Threat
        • S(F),XP(f)
      • Refutation
        • P(c);
    • Try
      • S(I);XB(j)
      • Threat
        • B(J),XS(g)
      • Vars
        • R(a);N_SPINS(b),P_SPINS(g)::QAR(H)
        • R(a);P_PINS(I)::QAB(H)
      • Refutation
        • P(c);
    • Try
      • B(B);XR(a)
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::QAB(H)
      • Refutation
        • P(d);XB(B)
    • Try
      • Q(H);XR(a)
      • Threat
        • S(I)
      • Vars
        • B(j);N_GUARD::S(I),XP(i)
      • Refutation
        • P(d);XQ(H)
    • Try
      • Q(H);
      • Threat
        • S(I)
      • Vars
        • R(a);::QAR2(H)
        • B(j);N_GUARD::S(I),XP(i)
      • Refutation
        • R(a);XR(C)
    • Try
      • Q(H);
      • Threat
        • QAB1(H),XS(g)
      • Vars
        • K(e);P-FLIGHT,P_SPINR(a)::QAR1(H),XS(g)
      • Refutation
        • K(e);N_SPINS(b),P-FLIGHT,P_SPINR(a)
  • Actual
    • S(F);
    • Threat
      • R1(A),XS(b)
    • Vars
      • R(a);N_SPINS(b),P_SPINS(g)::S(I)
      • R(a);::QAB(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).