MESON Chess Problem Database

Problem Display
PID: 132076 (b1B2R2/4R3/K5p1/p3b3/r3k1n1/1Q5n/3PNp2/5r1q w - - 0 1)

Savournin, Jacques

2nd Prize, Pirgos TT, 1979

b1B2R2/4R3/K5p1/p3b3/r3k1n1/1Q5n/3PNp2/5r1q

#2

7 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qf3
      • 2.Qxf3#
    • 1...Qg1
      • 2.Qf3#
    • 1...Qh2
      • 2.Qf3#
    • 1...Ra1
      • 2.Qc4#
    • 1...Ra2
      • 2.Qc4#
    • 1...Ra3
      • 2.Qc4#
    • 1...Rc4
      • 2.Qxc4#
    • 1...Rd4
      • 2.Sg3#
    • 1...Bd5
      • 2.Qc2#
    • 1...Bb7+
      • 2.Bxb7#
    • 1...Sg1
      • 2.Rf4#
    • 1...Sf4
      • 2.Rxf4#
    • 1...Sg5
      • 2.Rf4#
    • 1...Se3
      • 2.d3#
    • 1...g5
      • 2.Bf5#
  • Tries
    • 1.Rxe5+?
      • 1...Kxe5
        • 2.Qe6#
      • 1...Sxe5!
  • Keys
    • 1.Rd8!
      • threat
        • 2.Qd3#
      • 1...Bb7+
        • 2.Qxb7#
      • 1...Se3
        • 2.Qxe3#
      • 1...Qf3
        • 2.Qxa4#
      • 1...Ra3
        • 2.Rd4#
      • 1...Rd4
        • 2.Rxd4#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Sf4
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 7
    • ADDED MATES = 0
    • REMOVED MATES = 8
  • Sets
    • Q(b);N_GUARD::QAB1(C),XQ(b)
    • Q(b);N_GUARD::QAB1(C)
    • R(e);N_GUARD::QAR2(C)
    • R(e);N_GUARD::QAR2(C),XR(e)
    • R(e);SBLOCK::S(B)
    • B(k);SBLOCK::QAB(C)
    • B(k);CHECK,N_GUARD::B(F),XB(k)
    • S(d);N_GUARD::R1(G)
    • S(d);N_GUARD::R1(G),XS(d)
    • S(g);SBLOCK::P(A)
    • P(j);N_GUARD::B(F)
  • Tries
    • Try
      • R(E);CHECK,XB(i)
      • Vars
        • K(f);P-FLIGHT,XR(E)::QAR1(C)
      • Refutation
        • S(g);XR(E)
  • Actual
    • R(G);
    • Threat
      • QAB1(C)
    • Vars
      • B(k);CHECK,N_GUARD::QAB(C),XB(k)
      • S(g);N_GUARD::QAR1(C),XS(g)
      • Q(b);SBLOCK::QAR(C),XR(e)
      • R(e);N_GUARD::R1(G)
      • R(e);N_GUARD::R1(G),XR(e)
      • B(k);N_GUARD::QAB1(C),XB(k)
      • S(d);SBLOCK::S(B)
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Developed and maintained by Brian Stephenson.
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