MESON Chess Problem Database

Problem Display
PID: 54637 (8/4b3/1n1p1P2/1P1R1BpQ/1pk1N3/3Np3/PB5K/8 w - - 0 1)

Navon, Emanuel

Vatarescu, Paul

Comm., The Problemist Supplement, 2003/II

8/4b3/1n1p1P2/1P1R1BpQ/1pk1N3/3Np3/PB5K/8

#2

10 + 7

721 Variantim 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd5
      • 2.Qf7#
  • Tries
    • 1.Se5+?
      • 1...Kxd5
        • 2.Qd1#
        • 2.Qf7#
      • 1...dxe5!
    • 1.Sd2+?
      • 1...Kxd5
        • 2.Qf3#
        • 2.Qf7#
      • 1...exd2!
    • 1.Rc5+?
      • 1...Kxd3
        • 2.Qd1#
      • 1...dxc5!
    • 1.Qd1?
      • threat
        • 2.Qb3#
      • 1...Kxd5
        • 2.Se5#
      • 1...b3
        • 2.Qxb3#
      • 1...Sxd5!
    • 1.Qe2?
      • threat
        • 2.Sf4#
      • 1...Kxd5
        • 2.Sxb4#
      • 1...b3!
  • Keys
    • 1.Qg4!
      • threat
        • 2.Sc3#
      • 1...Kxd5
        • 2.Be6#
      • 1...Bxf6
        • 2.Sxf6#
      • 1...Sxd5
        • 2.Sxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);OGATEB,S_FLIGHT,XR(G)::QAB(I)
  • Tries
    • Try
      • S(D);CHECK
      • Refutation
        • P(f);XS(D)
    • Try
      • S(E);CHECK
      • Refutation
        • P(a);XS(E)
    • Try
      • R(G);CHECK
      • Vars
        • K(c);S_FLIGHT,XS(D)::QAR2(I)
      • Refutation
        • P(f);XR(G)
    • Try
      • Q(I);
      • Threat
        • QAB1(I)
      • Vars
        • K(c);S_FLIGHT,XR(G)::QAR(I)+S(D)
        • P(b);::QAB1(I),XP(b)
      • Refutation
        • S(e);XR(G)
    • Try
      • Q(I);
      • Threat
        • QAB(I)+S(D)
      • Vars
        • K(c);S_FLIGHT,XR(G)::S(D),XP(b)
      • Refutation
        • P(b);
  • Actual
    • Q(I);
    • Threat
      • QAR(I)+S(E)
    • Vars
      • K(c);OGATEB,S_FLIGHT,XR(G)::B(H)
      • B(g);XP(J)::QAR(I)+S(E),XB(g)
      • S(e);SBLOCK,XR(G)::QAR(I)+S(E),DCHECK,XP(f)
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