MESON Chess Problem Database

Problem Display
PID: 112361 (5RK1/3P2p1/r2b1N2/1N1pk3/6Q1/8/3q4/8 w - - 0 1)

Savournin, Jacques

6th Prize, Borsodi Vegyesz TT, 1967

5RK1/3P2p1/r2b1N2/1N1pk3/6Q1/8/3q4/8

#2

6 + 6

6490 yacpdb 2009
56 The Problemist 2013

SOLUTION

  • SOUND
  • Sets
    • 1...d4
      • 2.Qe4#
  • Tries
    • 1.Re8+?
      • 1...Kxf6
        • 2.Re6#
      • 1...Be7!
    • 1.d8Q?
      • threat
        • 2.Sd7#
      • 1...gxf6
        • 2.Qxf6#
      • 1...Ra7
        • 2.Qxd6#
      • 1...d4
        • 2.Qe4#
      • 1...Qf4!
  • Keys
    • 1.d8S!
      • threat
        • 2.Sd7#
      • 1...gxf6
        • 2.Sf7#
      • 1...Qf4
        • 2.Qe6#
      • 1...Ra7
        • 2.Sc6#
      • 1...d4
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(b);N_GUARD::QAR1(A)
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • K(c);S_FLIGHT,XS(C)::R1(E)
      • Refutation
        • B(e);P_SPINB(e)
    • Try
      • P(D);
      • Threat
        • S(C)
      • Vars
        • P(f);OGATE,XS(C)::QAB1(D),XP(f)
        • R(d);N_GUARD::QAB1(D),XB(e)
        • P(b);N_GUARD::QAR1(A)
      • Refutation
        • Q(a);
  • Actual
    • P(D);
    • Threat
      • S(C)
    • Vars
      • P(f);SBLOCK,XS(C)::S(D)
      • Q(a);SBLOCK::QAR1(A)
      • R(d);N_GUARD::S(D)
      • P(b);N_GUARD::QAR1(A)
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