MESON Chess Problem Database

Problem Display
PID: 2862 (3N2nN/3RpR1b/2p4p/4k2p/4Pp1K/3P4/4p3/3nB3 w - - 0 1)

Wurzburg, Otto

Source?, 1895

3N2nN/3RpR1b/2p4p/4k2p/4Pp1K/3P4/4p3/3nB3

#2

8 + 10

2681 All Change Here! 1919

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe4
      • 2.d4#
    • 1...Bf5
      • 2.Rxf5#
    • 1...Bg6
      • 2.Sxg6#
    • 1...Sb2
      • 2.Bc3#
    • 1...Sf2
      • 2.Bc3#
    • 1...Sc3
      • 2.Bxc3#
    • 1...Se3
      • 2.Bc3#
    • 1...Sf6
      • 2.Rfxe7#
    • 1...f3
      • 2.Bg3#
    • 1...c5
      • 2.Rd5#
    • 1...e6
      • 2.Sxc6#
  • Tries
    • 1.Kxh5?
      • 1...Bg6+
        • 2.Sxg6#
      • 1...Bxe4
        • 2.d4#
      • 1...Bf5
        • 2.Rxf5#
      • 1...Sb2
        • 2.Bc3#
      • 1...Sf2
        • 2.Bc3#
      • 1...Sc3
        • 2.Bxc3#
      • 1...Se3
        • 2.Bc3#
      • 1...f3
        • 2.Bg3#
      • 1...c5
        • 2.Rd5#
      • 1...e6
        • 2.Sxc6#
      • 1...Sf6+!
    • 1.Rfxe7+?
      • 1...Kf6
        • 2.Re6#
      • 1...Sxe7!
  • Keys
    • 1.Rf8!
      • 1...Bxe4
        • 2.d4#
      • 1...Bf5
        • 2.Rxf5#
      • 1...Bg6
        • 2.Sxg6#
      • 1...Sb2
        • 2.Bc3#
      • 1...Sf2
        • 2.Bc3#
      • 1...Sc3
        • 2.Bxc3#
      • 1...Se3
        • 2.Bc3#
      • 1...Sf6
        • 2.Shf7#
      • 1...f3
        • 2.Bg3#
      • 1...c5
        • 2.Rd5#
      • 1...e6
        • 2.Sxc6#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • B(i);SBLOCK,XP(C)::P(B)
    • B(i);N_GUARD::R1(F),XB(i)
    • B(i);N_GUARD::S(H),XB(i)
    • S(a);N_GUARD::B(A)
    • S(a);N_GUARD::B(A),XS(a)
    • S(j);N_GUARD,SBLOCK::R(F),XP(h)
    • P(c);OGATEB::B(A)
    • P(f);N_GUARD::R1(E)
    • P(h);SBLOCK::S(G),XP(f)
  • Tries
    • Try
      • K(D);P-FLIGHT,XP(e)
      • Vars
        • B(i);CHECK,N_GUARD::S(H),XB(i)
        • B(i);SBLOCK,XP(C)::P(B)
        • B(i);N_GUARD::R1(F),XB(i)
        • S(a);N_GUARD::B(A)
        • S(a);N_GUARD::B(A),XS(a)
        • P(c);OGATEB::B(A)
        • P(f);N_GUARD::R1(E)
        • P(h);SBLOCK::S(G),XP(f)
      • Refutation
        • S(j);CHECK
    • Try
      • R(F);CHECK,XP(h)
      • Vars
        • K(d);S_FLIGHT::R1(F)
      • Refutation
        • S(j);XR(F)
  • Actual
    • R(F);
    • Vars
      • B(i);SBLOCK,XP(C)::P(B)
      • B(i);N_GUARD::R1(F),XB(i)
      • B(i);N_GUARD::S(H),XB(i)
      • S(a);N_GUARD::B(A)
      • S(a);N_GUARD::B(A),XS(a)
      • S(j);SBLOCK::S(H)
      • P(c);OGATEB::B(A)
      • P(f);N_GUARD::R1(E)
      • P(h);SBLOCK::S(G),XP(f)
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