MESON Chess Problem Database

Problem Display
PID: 21781 (4NN1n/B1Q1p3/3qB3/RK2k3/R7/2ppr3/3bb3/8 w - - 0 1)

Wurzburg, Otto

1st HM., 8. American Chess Congress, 1921

4NN1n/B1Q1p3/3qB3/RK2k3/R7/2ppr3/3bb3/8

#2

8 + 9

3132 The Good Companion Two-Mover 1922
3098 FIDE Album (1914-1944) (I) 1971
3325 Wurzburg Artistry 1974

SOLUTION

  • SOUND
  • Tries
    • 1.Qxc3+?
      • 1...Qd4
        • 2.Qxd4#
      • 1...Bxc3!
    • 1.Qc5+?
      • 1...Qd5
        • 2.Bb8#
        • 2.Qxd5#
      • 1...Qxc5+!
  • Keys
    • 1.Qc4!
      • threat
        • 2.Qf4#
      • 1...Qb4+
        • 2.Kxb4#
      • 1...Qc5+
        • 2.Qxc5#
      • 1...Qb8+
        • 2.Bxb8#
      • 1...Qd5+
        • 2.Qxd5#
      • 1...Qa6+
        • 2.Kxa6#
      • 1...Qb6+
        • 2.Kxb6#
      • 1...Qc6+
        • 2.Kxc6#
      • 1...Qd7+
        • 2.Sxd7#
      • 1...Qxe6
        • 2.Qxe6#
      • 1...Qd4
        • 2.Qxd4#
      • 1...Re4
        • 2.Qxe4#
      • 1...Rf3
        • 2.Qe4#
      • 1...Rg3
        • 2.Qe4#
      • 1...Rh3
        • 2.Qe4#
      • 1...Sg6
        • 2.Sxg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 15
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(F);CHECK,N_PINQ(g),XP(c)
      • Vars
        • Q(g);N_GUARD,P_SPINQ(g)::QAB1(F),XQ(g)
      • Refutation
        • B(a);XQ(F)
    • Try
      • Q(F);CHECK,N_PINQ(g)
      • Refutation
        • Q(g);CHECK,XQ(F)
  • Actual
    • Q(F);N_PINQ(g)
    • Threat
      • QAB1(F)
    • Vars
      • Q(g);CHECK::R(B)+K(C),XQ(g)
      • Q(g);CHECK,N_GUARD::QAR2(F),XQ(g)
      • Q(g);CHECK,OGATEB::B(E),XQ(g)
      • Q(g);CHECK,N_GUARD::QAR1(F),XQ(g)
      • Q(g);CHECK,N_GUARD::S(H),XQ(g)
      • Q(g);OGATE,XB(D)::QAR1(F),XQ(g)
      • Q(g);N_GUARD::QAB1(F),XQ(g)
      • R(e);N_GUARD::QAR1(F),XR(e)
      • R(e);N_GUARD::QAR1(F)
      • S(i);N_GUARD::S(H),XS(i)
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