MESON Chess Problem Database

Problem Display
PID: 91299 (1R2N1K1/3kp2Q/Rn2n1B1/BP6/8/1Np5/4r3/3r2b1 w - - 0 1)

Volkmann, Albert

Die Schwalbe 094. TT, 1949

1R2N1K1/3kp2Q/Rn2n1B1/BP6/8/1Np5/4r3/3r2b1

#2

9 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sa4
      • 2.Sf6#
    • 1...Sc4
      • 2.Sf6#
    • 1...Sd5
      • 2.Rd6#
    • 1...Sa8
      • 2.Sf6#
    • 1...Sc8
      • 2.Sf6#
    • 1...Sd4
      • 2.Sc5#
  • Tries
    • 1.Bf5?
      • threat
        • 2.Ra7#
      • 1...Sc8
        • 2.Sf6#
      • 1...Bh2
        • 2.Sc5#
      • 1...Sa4
        • 2.Sf6#
        • 2.Rd8#
      • 1...Sc4
        • 2.Sf6#
        • 2.Rd8#
      • 1...Sd5
        • 2.Rd6#
        • 2.Rd8#
      • 1...Sa8
        • 2.Sf6#
        • 2.Rd8#
      • 1...Rg2+!
  • Keys
    • 1.Qh3!
      • threat
        • 2.Ra7#
      • 1...Bh2
        • 2.Sc5#
      • 1...Sa4
        • 2.Rd8#
      • 1...Sc4
        • 2.Rd8#
      • 1...Sd5
        • 2.Rd8#
      • 1...Sa8
        • 2.Rd8#
      • 1...Sc8
        • 2.Rb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 5
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • S(e);::S(H)
    • S(e);OGATE::R1(D)
    • S(f);N_GUARD,S_CUTB(b)::S(A)
  • Tries
    • Try
      • B(E);P_PINS(f)
      • Threat
        • R(D)
      • Vars
        • S(e);::S(H)
        • B(b);N_GUARD::S(A)
      • Refutation
        • R(c);CHECK
  • Actual
    • Q(F);N_PINP(h),P_PINS(f)
    • Threat
      • R(D)
    • Vars
      • B(b);N_GUARD::S(A)
      • S(e);::R1(G)
      • S(e);SBLOCK::R(G)
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