MESON Chess Problem Database

Problem Display
PID: 80009 (6qQ/3P2p1/4P2n/1KP1kNPN/3Rp1P1/1B1pPpp1/4r2B/5n2 w - - 0 1)

Savournin, Jacques

1st HM., Themes-64, 1966

6qQ/3P2p1/4P2n/1KP1kNPN/3Rp1P1/1B1pPpp1/4r2B/5n2

#2

13 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qf7
      • 2.Qb8#
    • 1...Qh7
      • 2.Qb8#
    • 1...Qa8
      • 2.Qxg7#
    • 1...Qb8+
      • 2.Qxb8#
    • 1...Qc8
      • 2.Qxg7#
    • 1...Qe8
      • 2.Qxg7#
    • 1...Sd2
      • 2.Bxg3#
    • 1...Sxe3
      • 2.Bxg3#
  • Tries
    • 1.Sfxg3?
      • threat
        • 2.Rxe4#
      • 1...Qb8+
        • 2.Qxb8#
      • 1...Sxg3
        • 2.Bxg3#
      • 1...Qh7
        • 2.Qb8#
      • 1...Qa8
        • 2.Qxg7#
      • 1...Sd2
        • 2.Sxe2#
      • 1...Rxe3!
    • 1.Sfxg7?
      • threat
        • 2.Rd5#
      • 1...Qb8+
        • 2.Qxb8#
      • 1...Qxe6
        • 2.Sxe6#
      • 1...Qxg7
        • 2.Qxg7#
        • 2.Qb8#
      • 1...Qa8
        • 2.Se8#
      • 1...Sxe3!
    • 1.Sf4?
      • threat
        • 2.Sg6#
        • 2.Rd5#
      • 1...Qb8+
        • 2.Qxb8#
      • 1...Rxe3
        • 2.Sg6#
      • 1...Sxe3
        • 2.Sg6#
      • 1...Sxg4
        • 2.Rd5#
      • 1...Qf7
        • 2.Rd5#
        • 2.Qb8#
      • 1...Qh7
        • 2.Rd5#
        • 2.Qb8#
      • 1...Qa8
        • 2.Sg6#
        • 2.Qxg7#
      • 1...Qe8
        • 2.Rd5#
        • 2.Qxg7#
      • 1...Qxe6!
    • 1.Shxg7?
      • threat
        • 2.Rd5#
      • 1...Qb8+
        • 2.Qxb8#
      • 1...Qxe6
        • 2.Sxe6#
      • 1...Qxg7
        • 2.Qxg7#
        • 2.Qb8#
      • 1...Sxe3
        • 2.Bxg3#
      • 1...Qa8
        • 2.Se8#
      • 1...Rxe3!
    • 1.Qxg8?
      • threat
        • 2.Rd5#
        • 2.Qxg7#
        • 2.Qb8#
      • 1...Sxe3
        • 2.Bxg3#
        • 2.Qxg7#
        • 2.Qb8#
      • 1...Sxg4
        • 2.Rd5#
      • 1...Sxf5
        • 2.Rd5#
      • 1...Sf7
        • 2.Qxg7#
      • 1...g6
        • 2.Rd5#
        • 2.Qg7#
        • 2.Qb8#
        • 2.Qh8#
      • 1...Sxg8!
  • Keys
    • 1.Shxg3!
      • threat
        • 2.Rxe4#
      • 1...Qb8+
        • 2.Qxb8#
      • 1...Rxe3
        • 2.Sxf1#
      • 1...Sxg3
        • 2.Bxg3#
      • 1...Qa8
        • 2.Qxg7#
      • 1...Sd2
        • 2.Sxe2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • Q(j);OGATE::QAB(M)
    • Q(j);N_GUARD::QAB(M),XP(i)
    • Q(j);CHECK,OGATE::QAB(M),XQ(j)
    • Q(j);N_GUARD,P_PINP(L)::QAB(M),XP(i)
    • S(a);N_GUARD::B(A),XP(e)
    • S(a);N_GUARD,XP(C)::B(A),XP(e)
  • Tries
    • Try
      • S(H);P_PINP(i),XP(e)
      • Threat
        • R1(D),XP(f)
      • Vars
        • Q(j);CHECK,OGATE::QAB(M),XQ(j)
        • S(a);OGATE,P_SPINS(a),XS(H)::B(A),XS(a)
        • Q(j);OGATE::QAB(M)
        • Q(j);N_GUARD::QAB(M),XP(i)
        • S(a);N_GUARD::B(A)+S(H),XR(b)
      • Refutation
        • R(b);XP(C)
    • Try
      • S(H);XP(i)
      • Threat
        • R1(D)
      • Vars
        • Q(j);CHECK,OGATE::QAB(M),XQ(j)
        • Q(j);XP(K)::QAB(M)+S(H),XQ(j)
        • Q(j);N_GUARD::QAB(M)+S(H)
      • Refutation
        • S(a);XP(C)
    • Try
      • S(J);N_PINP(e),P_PINP(i)
      • Threat
        • DUALS(2)
      • Vars
        • Q(j);CHECK,OGATE::QAB(M),XQ(j)
        • R(b);XP(C)::S(J)
        • S(a);XP(C)::S(J)
        • S(h);XP(E)::R1(D)
      • Refutation
        • Q(j);XP(K)
    • Try
      • S(J);XP(i)
      • Threat
        • R1(D)
      • Vars
        • Q(j);CHECK,OGATE::QAB(M),XQ(j)
        • Q(j);XP(K)::QAB(M)+S(J),XQ(j)
        • S(a);N_GUARD,XP(C)::B(A),XP(e)
        • Q(j);N_GUARD::QAB(M)+S(J)
      • Refutation
        • R(b);XP(C)
    • Try
      • Q(M);XQ(j)
      • Threat
        • DUALS(3)
      • Vars
        • S(h);XP(E)::R1(D)
        • S(h);XS(H)::R1(D)
        • S(h);::QAB(M),XP(i)
      • Refutation
        • S(h);XQ(M)
  • Actual
    • S(J);P_PINP(i),XP(e)
    • Threat
      • R1(D),XP(f)
    • Vars
      • Q(j);CHECK,OGATE::QAB(M),XQ(j)
      • R(b);N_GUARD,XP(C)::B(A)+S(J),XS(a)
      • S(a);OGATE,P_SPINS(a),XS(J)::B(A),XS(a)
      • Q(j);N_GUARD::QAB(M),XP(i)
      • S(a);N_GUARD::B(A)+S(J),XR(b)
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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).