MESON Chess Problem Database

Problem Display
PID: 141524 (1K2bNQq/P5p1/R3p3/2k1r3/PR1pPN1p/2Pn2b1/Bn6/1r6 w - - 0 1)

van Gool, Johann Christoffel

1st Comm., 07. Kwik-Toernooi, 1976

1K2bNQq/P5p1/R3p3/2k1r3/PR1pPN1p/2Pn2b1/Bn6/1r6

#2

11 + 12

102 Probleemblad 1976

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Sxe6#
    • 1...Rf5
      • 2.Sxe6#
    • 1...Rg5
      • 2.Sxe6#
    • 1...Rh5
      • 2.Sxe6#
    • 1...Bb5
      • 2.Rxb5#
    • 1...Bh5
      • 2.Sd7#
      • 2.Rb5#
    • 1...Bg6
      • 2.Sd7#
      • 2.Rb5#
    • 1...Bd7
      • 2.Sxd7#
    • 1...Bf7
      • 2.Sd7#
      • 2.Rb5#
    • 1...Sd1
      • 2.Sxd3#
    • 1...Sxa4
      • 2.Sxd3#
    • 1...Sc4
      • 2.Sxd3#
  • Tries
    • 1.Qxe6?
      • threat
        • 2.Qb6#
        • 2.Qd6#
      • 1...Qxf8
        • 2.Qb6#
      • 1...Rxe6
        • 2.Sxe6#
      • 1...Sxa4
        • 2.Sxd3#
        • 2.Qc4#
        • 2.Qd6#
      • 1...Rd5
        • 2.Qxd5#
        • 2.Qb6#
      • 1...Bc6
        • 2.Rxc6#
        • 2.Qxc6#
      • 1...Sc4
        • 2.Sxd3#
        • 2.Qxc4#
      • 1...Qh6!
    • 1.a8Q?
      • threat
        • 2.Qa7#
      • 1...Sxa4
        • 2.Sxd3#
      • 1...Bc6
        • 2.Rxc6#
        • 2.Qxc6#
      • 1...Sc4
        • 2.Sxd3#
      • 1...dxc3!
  • Keys
    • 1.Qf7!
      • threat
        • 2.Qe7#
      • 1...Qxf8
        • 2.Qxf8#
      • 1...Bxf7
        • 2.Rb5#
      • 1...Rd5
        • 2.Sxe6#
      • 1...Sc4
        • 2.Sxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • R(h);N_GUARD,P_PINS(F)::S(J),XP(i)
    • B(k);N_GUARD::R1(D),XB(k)
    • B(k);N_GUARD::S(J),XB(k)
    • S(b);N_GUARD,P_PINR(D)::S(F),XS(c)
    • S(b);N_GUARD,P_PINR(D),XP(C)::S(F),XS(c)
  • Tries
    • Try
      • Q(K);XP(i)
      • Threat
        • DUALS(2)
      • Vars
        • Q(l);XS(J)::QAB1(K)
        • R(h);P_PINS(F),XQ(K)::S(J),XR(h)
      • Refutation
        • Q(l);
    • Try
      • P(H);
      • Threat
        • QAB(H)
      • Vars
        • S(b);N_GUARD,P_PINR(D),XP(C)::S(F),XS(c)
        • S(b);N_GUARD,P_PINR(D)::S(F),XS(c)
      • Refutation
        • P(e);XP(B)
  • Actual
    • Q(K);
    • Threat
      • QAB(K)
    • Vars
      • Q(l);OGATE,XS(J)::QAB(K),XQ(l)
      • B(k);N_GUARD,P_PINS(J),XQ(K)::R1(D)
      • R(h);N_GUARD,P_PINS(F)::S(J),XP(i)
      • S(b);N_GUARD,P_PINR(D)::S(F),XS(c)
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