MESON Chess Problem Database

Problem Display
PID: 109147 (2N5/8/3RNnK1/B3kP2/4P3/q4P2/8/8 w - - 0 1)

Paslack, Rainer

Slovensky Dennik, 1991

2N5/8/3RNnK1/B3kP2/4P3/q4P2/8/8

#2

8 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qa2
      • 2.Bc3#
    • 1...Qc3
      • 2.Bxc3#
    • 1...Sxe4
      • 2.f4#
    • 1...Sg4
      • 2.Rd5#
    • 1...Sd5
      • 2.Rxd5#
    • 1...Sh5
      • 2.Rd5#
    • 1...Sd7
      • 2.Rd5#
    • 1...Sh7
      • 2.Rd5#
    • 1...Se8
      • 2.Rd5#
    • 1...Sg8
      • 2.Rd5#
  • Tries
    • 1.Bd8?
      • threat
        • 2.Bxf6#
      • 1...Sxe4
        • 2.f4#
      • 1...Sg4
        • 2.Rd5#
      • 1...Sd5
        • 2.Rxd5#
      • 1...Sh5
        • 2.Rd5#
      • 1...Sd7
        • 2.Rd5#
      • 1...Sh7
        • 2.Rd5#
      • 1...Se8
        • 2.Rd5#
      • 1...Sg8
        • 2.Rd5#
      • 1...Qxf3!
    • 1.Rd4?
      • threat
        • 2.f4#
      • 1...Qxf3
        • 2.Bc7#
      • 1...Qe3
        • 2.Bc7#
      • 1...Sd5
        • 2.Rxd5#
      • 1...Sh5
        • 2.Rd5#
      • 1...Qc1!
  • Keys
    • 1.Bc7!
      • threat
        • 2.Rd5#
      • 1...Qxd6
        • 2.Bxd6#
      • 1...Qxf3
        • 2.Rd4#
      • 1...Sxe4
        • 2.f4#
      • 1...Sd5
        • 2.Rxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • Q(a);N_GUARD::B(C)
    • Q(a);N_GUARD::B(C),XQ(a)
    • S(c);SBLOCK,XP(B)::P(A)
    • S(c);N_GUARD::R1(E)
    • S(c);N_GUARD::R1(E),XS(c)
  • Tries
    • Try
      • B(C);
      • Threat
        • B(C),XS(c)
      • Vars
        • S(c);SBLOCK,XP(B)::P(A)
        • S(c);N_GUARD::R1(E)
        • S(c);N_GUARD::R1(E),XS(c)
      • Refutation
        • Q(a);XP(A)
    • Try
      • R(E);
      • Threat
        • P(A)
      • Vars
        • Q(a);N_GUARD,XP(A)::B(C)
        • Q(a);N_GUARD::B(C)
        • S(c);N_GUARD::R1(E),XS(c)
        • S(c);N_GUARD::R1(E)
      • Refutation
        • Q(a);
  • Actual
    • B(C);
    • Threat
      • B(C)+R(E),DCHECK
    • Vars
      • Q(a);OGATE,P_SPINQ(a),XR(E)::B(C),XQ(a)
      • Q(a);N_GUARD,XP(A)::B(C)+R(E)
      • S(c);SBLOCK,XP(B)::P(A)
      • S(c);::B(C)+R(E),DCHECK,XS(c)
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