MESON Chess Problem Database

Problem Display
PID: 135375 (8/1Q6/3pR2n/3Pq1B1/2pNk1n1/5N2/3P2P1/2K2B2 w - - 0 1)

Laib, Kurt Friedrich

Die Schwalbe, 1952

8/1Q6/3pR2n/3Pq1B1/2pNk1n1/5N2/3P2P1/2K2B2

#2

10 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...c3
      • 2.d3#
  • Tries
    • 1.Sf5?
      • threat
        • 2.Sg3#
        • 2.Sxd6#
      • 1...Kxf5
        • 2.Qh7#
      • 1...Qxe6
        • 2.Sg3#
      • 1...Sf7
        • 2.Sg3#
      • 1...Sxf5!
    • 1.Bd3+?
      • 1...Kxd3
        • 2.Qb1#
      • 1...cxd3!
    • 1.Bxc4?
      • threat
        • 2.Qb1#
        • 2.d3#
      • 1...Se3
        • 2.d3#
      • 1...Sf2!
    • 1.Rxe5+?
      • 1...dxe5
        • 2.d6#
      • 1...Sxe5!
  • Keys
    • 1.Se2!
      • threat
        • 2.Sg3#
      • 1...Kd3
        • 2.Qb1#
      • 1...Kf5
        • 2.Qh7#
      • 1...Sf5
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(a);N_GUARD::P(C)
  • Tries
    • Try
      • S(F);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);N_SPINQ(d),OGATEB,S_FLIGHT,XS(F)::QAB(J)
        • Q(d);N_SPINQ(d),XR(I)::S(F)
        • S(f);::S(F)
      • Refutation
        • S(f);XS(F)
    • Try
      • B(B);CHECK
      • Vars
        • K(b);N_SPINQ(d),S_FLIGHT,XB(B)::QAB(J)
      • Refutation
        • P(a);XB(B)
    • Try
      • B(B);XP(a)
      • Threat
        • DUALS(2)
      • Vars
        • S(c);::P(C)
      • Refutation
        • S(c);
    • Try
      • R(I);CHECK,XQ(d)
      • Vars
        • P(e);OGATE,XR(I)::QAB(J)+P(G)
      • Refutation
        • S(c);XR(I)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • K(b);N_SPINQ(d),S_FLIGHT::QAB(J)
      • S(f);SBLOCK::S(F)
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