MESON Chess Problem Database

Problem Display
PID: 195008 (3n2q1/3p1rbb/KR6/3Q1Br1/3NN3/n1pk4/5B2/8 w - - 0 1)

Wurzburg, Otto

1st HM., Pittsburgh Gazette-Times, 1918

3n2q1/3p1rbb/KR6/3Q1Br1/3NN3/n1pk4/5B2/8

#2

7 + 10

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Sb1
      • 2.Qb5#
    • 1...Sc2
      • 2.Qb5#
    • 1...Sb5
      • 2.Qxb5#
    • 1...c2
      • 2.Rb3#
      • 2.Qb3#
  • Tries
    • 1.Qa2?
      • threat
        • 2.Sc5#
        • 2.Qe2#
      • 1...Rgxf5
        • 2.Qe2#
      • 1...Rfxf5
        • 2.Qe2#
      • 1...Bxd4
        • 2.Sc5#
      • 1...c2
        • 2.Qb3#
      • 1...Sc2!
  • Keys
    • 1.Rb2!
      • threat
        • 2.Sc5#
      • 1...Rg6+
        • 2.Sf6#
      • 1...Rf6+
        • 2.Se6#
      • 1...cxb2
        • 2.Qb3#
      • 1...Sc2
        • 2.Qb5#
      • 1...c2
        • 2.Rb3#
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • S(a);N_GUARD::QAB(D)
    • S(a);N_GUARD::QAB(D),XS(a)
  • Tries
    • Try
      • Q(D);
      • Threat
        • DUALS(2)
      • Vars
        • R(d);XB(E)::QAB1(D)
        • R(f);XB(E)::QAB1(D)
        • B(g);XS(B)::B(E)+S(C),DCHECK
        • P(b);OGATEB::QAR2(D)
      • Refutation
        • S(a);
  • Actual
    • R(G);
    • Threat
      • B(E)+S(C),DCHECK
    • Vars
      • R(d);CHECK,N_GUARD,S_CUTB(h)::B(E)+S(C)
      • R(f);CHECK,S_CUTB(g)::QAR(D)+S(B)
      • P(b);OGATEB,XR(G)::QAR2(D)
      • S(a);N_GUARD::QAB(D)
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