MESON Chess Problem Database

Problem Display
PID: 29421 (8/6Q1/1B6/1n2pp1K/NN2kp1R/1n5R/3r4/3r2b1 w - - 0 1)

Wurzburg, Otto

Bahn Frei, 1899

8/6Q1/1B6/1n2pp1K/NN2kp1R/1n5R/3r4/3r2b1

#2

7 + 9

3325 Wurzburg Artistry 1974

SOLUTION

  • SOUND
  • Sets
    • 1...Rf2
      • 2.Re3#
    • 1...Rg2
      • 2.Qxg2#
    • 1...Rd4
      • 2.Qg2#
    • 1...Rd5
      • 2.Qg2#
    • 1...Rd6
      • 2.Qg2#
    • 1...Rd7
      • 2.Qg2#
    • 1...Rd8
      • 2.Qg2#
    • 1...Bf2
      • 2.Qg2#
    • 1...Bh2
      • 2.Re3#
    • 1...Be3
      • 2.Rxe3#
    • 1...Bd4
      • 2.Qb7#
    • 1...S3d4
      • 2.Sc5#
    • 1...Sa3
      • 2.Sc3#
    • 1...Sc3
      • 2.Sxc3#
    • 1...S5d4
      • 2.Sc3#
    • 1...Sd6
      • 2.Sc3#
    • 1...Sa7
      • 2.Sc3#
    • 1...Sc7
      • 2.Sc3#
  • Tries
    • 1.Rxf4+?
      • 1...exf4
        • 2.Qe7#
      • 1...Kxf4!
  • Keys
    • 1.Bd4!
      • threat
        • 2.Qxe5#
      • 1...Kxd4
        • 2.Rxf4#
      • 1...Rxd4
        • 2.Qg2#
      • 1...Bxd4
        • 2.Qb7#
      • 1...S3xd4
        • 2.Sc5#
      • 1...S5xd4
        • 2.Sc3#
      • 1...exd4
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 14
  • Sets
    • R(c);S_CUTB(b)::R1(A)
    • R(c);N_GUARD::QAB(G),XR(c)
    • R(c);N_GUARD::QAB(G)
    • B(b);S_CUTR(c)::QAB(G)
    • B(b);N_GUARD::R1(A)
    • B(b);N_GUARD::R1(A),XB(b)
    • S(d);N_GUARD,SBLOCK,S_CUTB(b)::S(B)
    • S(g);N_GUARD::S(B)
    • S(g);N_GUARD::S(B),XS(g)
  • Tries
    • Try
      • R(D);CHECK,XP(f)
      • Vars
        • P(h);SBLOCK,XR(D)::QAR(G)
      • Refutation
        • K(e);P-FLIGHT,XR(D)
  • Actual
    • B(F);
    • Threat
      • QAR1(G),XP(h)
    • Vars
      • K(e);P-FLIGHT,XB(F)::R(D),XP(f)
      • R(c);N_GUARD,SBLOCK,XB(F)::QAB(G)
      • B(b);SBLOCK,XB(F)::QAB(G)
      • S(d);N_GUARD,SBLOCK,XB(F)::S(B)
      • S(g);N_GUARD,SBLOCK,XB(F)::S(B)
      • P(h);OGATEB,SBLOCK,XB(F)::QAR(G)
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