MESON Chess Problem Database

Problem Display
PID: 143371 (2R1Rnb1/K1Q1p1r1/6PB/3B4/1N1k4/5P2/4n3/8 w - - 0 1)

Vollenweider, Odette (aka Baumgartner, Gabriel)

Neue Zurcher Zeitung, 1963

2R1Rnb1/K1Q1p1r1/6PB/3B4/1N1k4/5P2/4n3/8

#2

9 + 6

15257 Kunstwerke auf 64 Feldern (1922-1966) (Ott, Kummer, Schudel) 1968
3195 idee & form 1983

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.Qf4#
      • 2.Qc3#
    • 1...Sg1
      • 2.Qf4#
      • 2.Qc3#
    • 1...Sc3
      • 2.Qxc3#
    • 1...Sg3
      • 2.Qc3#
    • 1...Sf4
      • 2.Qxf4#
      • 2.Qc3#
  • Tries
    • 1.Sc2+?
      • 1...Kd3
        • 2.Be4#
        • 2.Qc4#
      • 1...Kxd5!
    • 1.Be4?
      • threat
        • 2.Sc2#
        • 2.Qc5#
      • 1...Bd5
        • 2.Sc2#
      • 1...Bb3
        • 2.Qc5#
      • 1...Se6
        • 2.Sc2#
      • 1...Sd7
        • 2.Sc2#
      • 1...e5
        • 2.Sc2#
      • 1...e6
        • 2.Sc2#
      • 1...Bc4!
    • 1.Bxg7+?
      • 1...e5
        • 2.Qxe5#
        • 2.Qb6#
        • 2.Qc5#
      • 1...Ke3!
  • Keys
    • 1.Qd6!
      • threat
        • 2.Rc4#
      • 1...exd6+
        • 2.Bxg7#
      • 1...e5+
        • 2.Bf7#
      • 1...e6+
        • 2.Bb7#
      • 1...Bxd5
        • 2.Qxd5#
      • 1...Sf4
        • 2.Qxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • S(a);N_GUARD::QAB1(G),XS(a)
    • S(a);N_GUARD::QAB1(G)
  • Tries
    • Try
      • S(B);CHECK
      • Refutation
        • K(b);P-FLIGHT,XB(C)
    • Try
      • B(C);
      • Threat
        • DUALS(2)
      • Vars
        • B(f);::S(B)
        • B(f);::QAB1(G)
        • S(e);::S(B)
        • P(c);P_PINQ(G)::S(B)
      • Refutation
        • B(f);
    • Try
      • B(E);CHECK,XR(d)
      • Refutation
        • K(b);P_SPINP(c),S_FLIGHT
  • Actual
    • Q(G);
    • Threat
      • R1(H)
    • Vars
      • P(c);CHECK,N_GUARD,XQ(G)::B(E),XR(d)
      • P(c);CHECK,N_GUARD::QAR(G)+B(C)
      • P(c);CHECK,N_GUARD,S_CUTB(f)::QAR(G)+B(C)
      • B(f);OGATE,P_SPINB(f),XB(C)::QAR1(G),XB(f)
      • S(a);N_GUARD::QAR2(G),XS(a)
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