MESON Chess Problem Database

Problem Display
PID: 48238 (n3b1q1/2PrP3/N2k1BP1/2prN1P1/B5P1/bQ1R4/3P4/4K3 w - - 0 1)

Cheylan, Yves

1st Prize, Schiffmann MT, 1980-1981

n3b1q1/2PrP3/N2k1BP1/2prN1P1/B5P1/bQ1R4/3P4/4K3

#2

13 + 8

3752 FIDE Album (1980-1982) 1988
23 Die Schwalbe 2003

SOLUTION

  • SOUND
  • Sets
    • 1...Qe6
      • 2.c8S#
    • 1...Qh7
      • 2.Qxd5#
    • 1...Qxg6
      • 2.Qxd5#
    • 1...Qg7
      • 2.Qxd5#
    • 1...Qf8
      • 2.Qxd5#
    • 1...Qh8
      • 2.Qxd5#
    • 1...Rxd3
      • 2.c8S#
    • 1...Rd4
      • 2.c8S#
    • 1...Sb6
      • 2.Qxb6#
    • 1...Sxc7
      • 2.Qb6#
  • Tries
    • 1.c8Q?
      • threat
        • 2.Qc6#
      • 1...Ke6
        • 2.Qxd5#
      • 1...Ra7
        • 2.Sc4#
      • 1...Rb7
        • 2.Sc4#
      • 1...Rc7
        • 2.Sc4#
      • 1...Rd8
        • 2.Sc4#
      • 1...Sc7
        • 2.Qb6#
      • 1...Rxe7!
  • Keys
    • 1.Re3!
      • threat
        • 2.Sc4#
      • 1...Ke6
        • 2.Sf7#
      • 1...Rxd2
        • 2.c8S#
      • 1...Rxe5
        • 2.c8S#
      • 1...Rd3
        • 2.c8S#
      • 1...Rd4
        • 2.c8S#
      • 1...Sb6
        • 2.Qxb6#
      • 1...c4
        • 2.Sxc4#

This is a version

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • Q(h);P_PINS(G),SBLOCK::P=S
    • Q(h);N_GUARD::QAR1(C),XR(c)
    • Q(h);N_GUARD,XP(K)::QAR1(C),XR(c)
    • R(c);N_SPINR(c),XR(D)::P=S
    • R(c);::P=S
    • S(f);N_GUARD::QAR2(C),XS(f)
    • S(f);N_GUARD,XP(L)::QAR2(C)
  • Tries
    • Try
      • P(L);
      • Threat
        • QAR1(L)
      • Vars
        • K(d);P-FLIGHT,S_CUTQ(h)::QAB1(C),XR(c)
        • R(e);::S(G)
        • S(f);N_GUARD::QAR2(C)
      • Refutation
        • R(e);P_PINS(G),XP(M)
  • Actual
    • R(D);N_PINR(c)
    • Threat
      • S(G)
    • Vars
      • K(d);P-FLIGHT,P_SPINR(c),S_CUTB(g),S_CUTQ(h)::R(D)+S(G)
      • R(c);XP(B)::P=S
      • R(c);P_PINR(D),XS(G)::P=S
      • R(c);::P=S
      • S(f);N_GUARD::QAR2(C),XS(f)
      • P(b);::S(G),XP(b)
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