MESON Chess Problem Database

Problem Display
PID: 17710 (5n2/1Q2K3/3P2p1/2k1N1P1/2p1P3/b7/1n1PN3/B7 w - - 0 1)

Goldschmeding, Cornelis

Visserman, Eeltje

2nd HM., Wrobel JT, 1948

5n2/1Q2K3/3P2p1/2k1N1P1/2p1P3/b7/1n1PN3/B7

#2

9 + 6

3105 FIDE Album (1945-1955) 1964
273 Mat Plus 1994
56 The Problemist 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Bb4
      • 2.Qc6#
    • 1...Sd1
      • 2.Bd4#
    • 1...Sd3
      • 2.Bd4#
    • 1...Sa4
      • 2.Bd4#
    • 1...Se6
      • 2.Sd7#
    • 1...Sd7
      • 2.Sxd7#
    • 1...Sh7
      • 2.Sd7#
    • 1...c3
      • 2.d4#
  • Tries
    • 1.Sd3+?
      • 1...Sxd3
        • 2.Bd4#
      • 1...cxd3!
    • 1.Bxb2?
      • threat
        • 2.Bxa3#
        • 2.Bd4#
      • 1...Bb4
        • 2.Bd4#
        • 2.Qc6#
      • 1...Se6
        • 2.Sd7#
        • 2.Bxa3#
      • 1...c3
        • 2.Bxa3#
        • 2.d4#
      • 1...Bxb2!
    • 1.Qa6?
      • threat
        • 2.Qa5#
      • 1...Bb4
        • 2.Qc6#
      • 1...Kb4!
    • 1.d3?
      • threat
        • 2.d4#
      • 1...Sxd3
        • 2.Bd4#
      • 1...Se6
        • 2.Sd7#
      • 1...cxd3!
  • Keys
    • 1.Sd4!
      • 1...Kxd4
        • 2.Qd5#
      • 1...Sd1
        • 2.Qb5#
      • 1...Bb4
        • 2.Qa7#
      • 1...Sd3
        • 2.Qb5#
      • 1...Sa4
        • 2.Qb5#
      • 1...Se6
        • 2.Sxe6#
      • 1...Sd7
        • 2.Se6#
      • 1...Sh7
        • 2.Se6#
      • 1...c3
        • 2.Sb3#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 8
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(b);SBLOCK::QAR1(H)
    • S(a);OGATE::B(A)
    • S(f);N_GUARD::S(E)
    • S(f);N_GUARD::S(E),XS(f)
    • P(c);N_GUARD::P(B)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • S(a);OGATE,XS(E)::B(A)
      • Refutation
        • P(c);XS(E)
    • Try
      • B(A);XS(a)
      • Threat
        • DUALS(2)
      • Refutation
        • B(b);XB(A)
    • Try
      • Q(H);
      • Threat
        • QAR2(H)
      • Vars
        • B(b);SBLOCK::QAR1(H)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • P(B);
      • Threat
        • P(B)
      • Vars
        • S(a);OGATE,XP(B)::B(A)
        • S(f);N_GUARD::S(E)
      • Refutation
        • P(c);XP(B)
  • Actual
    • S(C);
    • Vars
      • K(d);P_PINP(G),P_SPINS(a),S_FLIGHT,XS(C)::QAR1(H)
      • S(a);::QAR1(H)
      • B(b);SBLOCK::QAB(H)
      • S(f);N_GUARD::S(C),XS(f)
      • S(f);N_GUARD::S(C)
      • P(c);N_GUARD::S(C)
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