MESON Chess Problem Database

Problem Display
PID: 16847 (1K1R2N1/2p3q1/Q1pnp1p1/2PkN3/1P1b2R1/2P3P1/2r1r3/3B2B1 w - - 0 1)

Knuppert, Hugo

1st Prize, Week-end, 1943

1K1R2N1/2p3q1/Q1pnp1p1/2PkN3/1P1b2R1/2P3P1/2r1r3/3B2B1

#2

12 + 10

3098 FIDE Album (1914-1944) (I) 1971

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe5
      • 2.Se7#
    • 1...Rxe5
      • 2.Rxd4#
    • 1...Bxe5
      • 2.Qc4#
  • Tries
    • 1.Se7+?
      • 1...Kxe5
        • 2.Bxd4#
      • 1...Qxe7!
    • 1.Bxd4?
      • threat
        • 2.Qc4#
        • 2.Qxc6#
      • 1...Qxe5
        • 2.Se7#
      • 1...Rxc3
        • 2.Qxc6#
      • 1...Qd7
        • 2.Sf6#
      • 1...Rxe5!
  • Keys
    • 1.Rg5!
      • threat
        • 2.Qxc6#
      • 1...Ke4
        • 2.Qxc6#
      • 1...Qxe5
        • 2.Sf6#
      • 1...Rxe5
        • 2.Bf3#
      • 1...Bxe5
        • 2.Qd3#
      • 1...Qd7
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(j);N_GUARD,SBLOCK,XS(H)::S(L)
    • R(b);SBLOCK,XS(H)::R1(F),XB(c)
    • B(c);SBLOCK,XS(H)::QAB1(I)
  • Tries
    • Try
      • S(L);CHECK
      • Vars
        • K(d);N_SPINS(f),P-FLIGHT,XS(H)::B(B),XB(c)
      • Refutation
        • Q(j);XS(L)
    • Try
      • B(B);XB(c)
      • Threat
        • DUALS(2)
      • Vars
        • Q(j);N_GUARD,XS(H)::S(L)
        • R(a);XP(C)::QAB1(I),XP(e)
        • Q(j);N_GUARD,N_SPINS(f)::S(L)
      • Refutation
        • R(b);XS(H)
  • Actual
    • R(F);
    • Threat
      • QAB1(I),XP(e)
    • Vars
      • K(d);N_SPINS(f),S_FLIGHT::QAB(I),XP(e)
      • Q(j);N_GUARD,P_SPINQ(j),XS(H)::S(L)
      • R(b);OGATE,P_SPINR(b),XS(H)::B(A)
      • B(c);OGATEB,P_SPINB(c),XS(H)::QAR2(I)
      • Q(j);N_GUARD,N_SPINS(f)::S(L)
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