MESON Chess Problem Database

Problem Display
PID: 80146 (8/3p4/2R2Kp1/n1Np2p1/3k4/5Qpr/1P1rBqNb/3R1nB1 w - - 0 1)

Savournin, Jacques

2nd Prize, Nice-Matin, 1975

8/3p4/2R2Kp1/n1Np2p1/3k4/5Qpr/1P1rBqNb/3R1nB1

#2

9 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Qxg1
      • 2.Qg4#
      • 2.Qc3#
    • 1...Qe3
      • 2.Qg4#
    • 1...Se3
      • 2.Rxd2#
    • 1...Sb3
      • 2.Sxb3#
    • 1...Sc4
      • 2.Sb3#
    • 1...Sxc6
      • 2.Sb3#
    • 1...Sb7
      • 2.Sb3#
    • 1...g4
      • 2.Qf4#
    • 1...dxc6
      • 2.Se6#
    • 1...d6
      • 2.Se6#
  • Tries
    • 1.Se1?
      • threat
        • 2.Sc2#
      • 1...Sxc6
        • 2.Sb3#
      • 1...dxc6
        • 2.Se6#
      • 1...Se3
        • 2.Rxd2#
      • 1...Rd3!
    • 1.Sf4?
      • threat
        • 2.Qc3#
      • 1...Rd3
        • 2.Qxd3#
      • 1...Qe3
        • 2.Qxd5#
      • 1...Se3
        • 2.Rxd2#
      • 1...g2!
    • 1.Bxf2+?
      • 1...Se3
        • 2.Bxe3#
        • 2.Rxd2#
        • 2.Qg4#
        • 2.Qxe3#
      • 1...gxf2!
    • 1.Qxf2+?
      • 1...Se3
        • 2.Rxd2#
        • 2.Qxe3#
      • 1...gxf2!
  • Keys
    • 1.Se3!
      • threat
        • 2.Sc2#
      • 1...Qxf3+
        • 2.Sf5#
      • 1...Qxe3
        • 2.Qg4#
      • 1...Qxe2
        • 2.Qxd5#
      • 1...Sxe3
        • 2.Rxd2#
      • 1...Sxc6
        • 2.Sb3#
      • 1...dxc6
        • 2.Se6#
      • 1...Rd3
        • 2.Rxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • Q(c);N_PINQ(F)::QAR(F)
    • S(a);N_GUARD,N_SPINQ(c)::R(A),XR(b)
    • S(h);N_GUARD::S(G),XS(h)
    • S(h);N_GUARD::S(G)
    • S(h);N_GUARD,XR(H)::S(G)
    • P(j);N_GUARD::QAR2(F)
    • P(l);N_GUARD,XR(H)::S(G)
    • P(l);N_GUARD::S(G)
  • Tries
    • Try
      • S(E);
      • Threat
        • S(E)
      • Vars
        • S(h);N_GUARD,XR(H)::S(G)
        • P(l);N_GUARD,XR(H)::S(G)
        • S(a);N_GUARD,N_SPINQ(c)::R(A),XR(b)
      • Refutation
        • R(b);
    • Try
      • S(E);N_SPINQ(F)
      • Threat
        • QAB1(F)
      • Vars
        • R(b);N_GUARD::QAR1(F),XR(b)
        • Q(c);::QAR1(F),XP(i)
        • S(a);N_GUARD,N_SPINQ(c)::R(A),XR(b)
      • Refutation
        • P(e);
    • Try
      • B(B);CHECK,N_SPINQ(F),XQ(c)
      • Refutation
        • P(e);XB(B)
    • Try
      • Q(F);CHECK,N_SPINQ(F),XQ(c)
      • Refutation
        • P(e);P_SPINP(e),XQ(F)
  • Actual
    • S(E);N_PINQ(c)
    • Threat
      • S(E)
    • Vars
      • Q(c);CHECK,XQ(F)::B(B)+S(E),DCHECK
      • Q(c);N_PINQ(F),P_SPINQ(c),XS(E)::QAR(F)
      • Q(c);N_PINQ(F),XB(D)::QAR1(F),XP(i)
      • S(a);N_GUARD,XS(E)::R(A),XR(b)
      • S(h);N_GUARD,XR(H)::S(G)
      • P(l);N_GUARD,XR(H)::S(G)
      • R(b);OGATE::R1(A),XR(b)
HTML5 logo

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).