MESON Chess Problem Database

Problem Display
PID: 198520 (8/3Q1p1B/5P1n/1ppP4/bprkNK2/2pp1R2/8/8 w - - 0 1)

Spiess, Jean-Yves

2nd Comm., Gevers MT, 1983

8/3Q1p1B/5P1n/1ppP4/bprkNK2/2pp1R2/8/8

#2

7 + 10

5110 Bekroonde Problemen 2002

SOLUTION

  • SOUND
  • Tries
    • 1.Sf2?
      • threat
        • 2.Rxd3#
      • 1...d2
        • 2.Rd3#
      • 1...Bc2!
    • 1.Sg3?
      • threat
        • 2.Rxd3#
      • 1...Sf5
        • 2.Sxf5#
      • 1...d2
        • 2.Se2#
        • 2.Rd3#
      • 1...Bc2!
    • 1.Qh3?
      • threat
        • 2.Rxd3#
      • 1...Kxd5
        • 2.Qd7#
      • 1...d2
        • 2.Rd3#
      • 1...Bc2!
    • 1.Qe8?
      • threat
        • 2.Qe5#
      • 1...Kxd5
        • 2.Qd7#
      • 1...Sg4!
    • 1.Qc7?
      • threat
        • 2.Qe5#
      • 1...Kxd5
        • 2.Qd6#
        • 2.Qd7#
      • 1...Sg4!
    • 1.Qe7?
      • threat
        • 2.Qe5#
      • 1...Kxd5
        • 2.Qd6#
        • 2.Qd7#
      • 1...Sg4!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Rxd3#
      • 1...Kxd5+
        • 2.Se4#
      • 1...Bc2
        • 2.Sxb5#
      • 1...Sf5
        • 2.Sxf5#
      • 1...d2
        • 2.Rd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Threat
        • R1(A),XP(b)
      • Vars
        • P(b);::R1(A)
      • Refutation
        • B(c);
    • Try
      • S(B);
      • Threat
        • R1(A),XP(b)
      • Vars
        • S(i);N_GUARD::S(B),XS(i)
      • Refutation
        • B(c);
    • Try
      • Q(F);
      • Threat
        • R1(A),XP(b)
      • Vars
        • K(f);OGATEB,P-FLIGHT,P_PINS(B),XP(D)::QAR2(F)
        • P(b);::R1(A)
      • Refutation
        • B(c);
    • Try
      • Q(F);
      • Threat
        • QAB1(F)
      • Vars
        • K(f);OGATEB,P-FLIGHT,P_PINS(B),XP(D)::QAR2(F)
      • Refutation
        • S(i);
    • Try
      • Q(F);
      • Threat
        • QAB1(F)
      • Refutation
        • S(i);
    • Try
      • Q(F);
      • Threat
        • QAB1(F)
      • Refutation
        • S(i);
  • Actual
    • S(B);
    • Threat
      • R1(A),XP(b)
    • Vars
      • K(f);CHECK,P-FLIGHT,XP(D)::QAR(F)+S(B)
      • B(c);N_GUARD::S(B),XP(g)
      • S(i);N_GUARD::S(B),XS(i)
      • P(b);::R1(A)
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