MESON Chess Problem Database

Problem Display
PID: 205774 (br6/b3N3/p3r1P1/2B2N1P/4PkpK/2Q5/6B1/2n4n w - - 0 1)

Roscher, Willy

2nd HM., Unterfrankische Arbeiter-Schachzeitung, 1925

br6/b3N3/p3r1P1/2B2N1P/4PkpK/2Q5/6B1/2n4n

#2

9 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Qd2#
      • 2.Qxc1#
      • 2.Qe3#
    • 1...Reb6
      • 2.Be3#
    • 1...Rc6
      • 2.Sd5#
    • 1...Rd6
      • 2.Bxd6#
    • 1...Rxg6
      • 2.Sxg6#
    • 1...Rbb6
      • 2.Be3#
    • 1...Rb7
      • 2.Sd5#
    • 1...Bd5
      • 2.Sxd5#
    • 1...Sf2
      • 2.Qg3#
    • 1...Sg3
      • 2.Qxg3#
  • Tries
    • 1.Bd6+?
      • 1...Re5
        • 2.Bxe5#
        • 2.Qxe5#
      • 1...Rxd6!
  • Keys
    • 1.Sg7!
      • threat
        • 2.Sxe6#
      • 1...Rxe4
        • 2.Qf6#
      • 1...Rxg6
        • 2.Sxg6#
      • 1...Rxe7
        • 2.Qf6#
      • 1...Re5
        • 2.Qd2#
        • 2.Qxc1#
        • 2.Qe3#
      • 1...Reb6
        • 2.Be3#
      • 1...Rc6
        • 2.Sd5#
      • 1...Rd6
        • 2.Bxd6#
      • 1...Rf6
        • 2.Qxf6#
      • 1...Rbb6
        • 2.Be3#
      • 1...Bd5
        • 2.Sxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • R(f);S_CUTB(g)::B(E)
    • R(f);S_CUTB(h)::S(I)
    • R(f);N_GUARD::B(E),XR(f)
    • R(f);XP(H)::S(I),XR(f)
    • R(i);S_CUTB(g)::B(E)
    • R(i);S_CUTB(h)::S(I)
    • B(h);N_GUARD::S(I),XB(h)
    • S(b);N_GUARD::QAB1(B)
    • S(b);N_GUARD::QAB1(B),XS(b)
  • Tries
    • Try
      • B(E);CHECK
      • Refutation
        • R(f);XB(E)
  • Actual
    • S(F);
    • Threat
      • S(F),XR(f)
    • Vars
      • R(f);N_GUARD,XP(C)::QAR2(B)
      • R(f);XP(H)::S(I),XR(f)
      • R(f);N_GUARD,XS(I)::QAR2(B)
      • R(f);S_CUTB(g)::B(E)
      • R(f);S_CUTB(h)::S(I)
      • R(f);N_GUARD::B(E),XR(f)
      • R(f);N_GUARD::QAR2(B),XR(f)
      • R(i);S_CUTB(g)::B(E)
      • B(h);N_GUARD::S(I),XB(h)
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