MESON Chess Problem Database

Problem Display
PID: 120950 (B7/p6b/5p1K/5R2/5Nkp/7R/2Q4n/8 w - - 0 1)

Wurzburg, Otto

La Presse, 1896

B7/p6b/5p1K/5R2/5Nkp/7R/2Q4n/8

#2

6 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sf1
      • 2.Bf3#
    • 1...Sf3
      • 2.Bxf3#
  • Tries
    • 1.Be4?
      • threat
        • 2.Qg2#
      • 1...Sf1
        • 2.Bf3#
        • 2.Qd1#
        • 2.Qe2#
      • 1...Bxf5!
    • 1.Rg3+?
      • 1...Kxg3
        • 2.Qg2#
      • 1...hxg3!
    • 1.Rxh4+?
      • 1...Kg3
        • 2.Qxh2#
      • 1...Kxh4!
    • 1.Rg5+?
      • 1...Kxf4
        • 2.Qc1#
        • 2.Qd2#
        • 2.Qxh2#
        • 2.Qc7#
      • 1...fxg5!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Sf2#
      • 1...Kxh3
        • 2.Qg2#
      • 1...Kxf5
        • 2.Qc8#
      • 1...Bxf5
        • 2.Qg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • S(a);N_GUARD::B(F)
    • S(a);N_GUARD::B(F),XS(a)
  • Tries
    • Try
      • B(F);
      • Threat
        • QAR2(A)
      • Refutation
        • B(f);XR(D)
    • Try
      • R(B);CHECK
      • Vars
        • K(b);P-FLIGHT,XR(B)::QAR1(A)
      • Refutation
        • P(c);XR(B)
    • Try
      • R(B);CHECK,XP(c)
      • Vars
        • K(b);P-FLIGHT::QAB1(A),XS(a)
      • Refutation
        • K(b);P-FLIGHT,XR(B)
    • Try
      • R(D);CHECK
      • Refutation
        • P(d);XR(D)
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • K(b);S_FLIGHT,XR(B)::QAB1(A)
      • K(b);OGATEB,S_FLIGHT,XR(D)::QAB(A)
      • B(f);SBLOCK,XR(D)::QAR2(A)
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