MESON Chess Problem Database

Problem Display
PID: 257938 (1KB1n3/4NR1b/2pp3q/1N1Pk3/6Rp/B3pnP1/5P2/4b3 w - - 0 1)

Seidemann, Felix

British Chess Magazine, 1934

1KB1n3/4NR1b/2pp3q/1N1Pk3/6Rp/B3pnP1/5P2/4b3

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Bf5
      • 2.Rxf5#
    • 1...Bg8
      • 2.Rf5#
    • 1...Sd2
      • 2.Bb2#
    • 1...Sf6
      • 2.Bxd6#
    • 1...cxd5
      • 2.Sc6#
  • Tries
    • 1.Bb2+?
      • 1...Sd4
        • 2.Bxd4#
      • 1...Bc3!
    • 1.Rd4?
      • threat
        • 2.Sxc6#
      • 1...cxb5
        • 2.Sc6#
      • 1...cxd5
        • 2.Sc6#
      • 1...c5
        • 2.Sc6#
      • 1...Sxd4!
  • Keys
    • 1.Bf5!
      • threat
        • 2.Re4#
      • 1...Bxf5
        • 2.Rxf5#
      • 1...cxd5
        • 2.Sc6#
      • 1...Qf4
        • 2.gxf4#
      • 1...Sd2
        • 2.Bb2#
      • 1...Sg5
        • 2.f4#
      • 1...Sf6
        • 2.Bxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(i);N_GUARD::R1(H),XB(i)
    • B(i);N_GUARD::R1(H)
    • S(c);N_GUARD,S_CUTB(a)::B(B)
    • S(j);N_GUARD,S_CUTQ(h)::B(B),XP(g)
    • P(f);SBLOCK,XP(F)::S(G)
  • Tries
    • Try
      • B(B);CHECK
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::B(B),XS(c)
      • Refutation
        • B(a);P_SPINB(a)
    • Try
      • R(D);
      • Threat
        • S(G),XP(f)
      • Vars
        • P(f);XS(E)::S(G)
        • P(f);XP(F)::S(G)
        • P(f);::S(G)
      • Refutation
        • S(c);XR(D)
  • Actual
    • B(J);
    • Threat
      • R1(D)
    • Vars
      • B(i);OGATE,XB(J)::R1(H),XB(i)
      • P(f);SBLOCK,XP(F)::S(G)
      • Q(h);OGATE::P(C),XQ(h)
      • S(c);N_GUARD,S_CUTB(a)::B(B)
      • S(c);OGATE::P(A)
      • S(j);N_GUARD,S_CUTQ(h)::B(B),XP(g)
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