MESON Chess Problem Database

Problem Display
PID: 252361 (8/2Kn4/k7/8/p1P5/4Q3/8/2R5 w - - 0 1)

Zimmer, Eligiusz

Schweizerische Schachzeitung, 2004

8/2Kn4/k7/8/p1P5/4Q3/8/2R5

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Se5
      • 2.Qb6#
    • 1...Sb6
      • 2.Qxb6#
    • 1...Sf6
      • 2.Qb6#
    • 1...Sb8
      • 2.Qb6#
    • 1...Sf8
      • 2.Qb6#
    • 1...a3
      • 2.Qxa3#
  • Tries
    • 1.Rb1?
      • 1...Ka5
        • 2.Qa7#
      • 1...Sb6
        • 2.Qxb6#
      • 1...Se5
        • 2.Qb6#
      • 1...Sf6
        • 2.Qb6#
      • 1...Sb8
        • 2.Qb6#
      • 1...Sf8
        • 2.Qb6#
      • 1...a3
        • 2.Qxa3#
      • 1...Sc5!
    • 1.Qc5?
      • 1...Sb6
        • 2.Qxb6#
      • 1...Se5
        • 2.Qb6#
      • 1...Sf6
        • 2.Qb6#
      • 1...Sb8
        • 2.Qb6#
      • 1...Sf8
        • 2.Qb6#
      • 1...a3
        • 2.Qxa3#
      • 1...Sxc5!
  • Keys
    • 1.Qb3!
      • threat
        • 2.Qxa4#
      • 1...Ka5
        • 2.Qb5#
      • 1...Ka7
        • 2.Qxa4#
        • 2.Qb7#
      • 1...axb3
        • 2.Ra1#
      • 1...Sc5
        • 2.Qb6#
      • 1...Sb6
        • 2.Qxb6#
      • 1...a3
        • 2.Qa4#
        • 2.Qxa3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • S(c);N_GUARD::QAR1(B)
    • S(c);N_GUARD::QAR1(B),XS(c)
    • P(a);OGATEB::QAR(B),XP(a)
  • Tries
    • Try
      • R(A);
      • Vars
        • K(b);N_GUARD,P-FLIGHT::QAR2(B)
        • S(c);N_GUARD::QAR1(B),XS(c)
        • S(c);N_GUARD::QAR1(B)
        • P(a);OGATEB::QAR(B),XP(a)
      • Refutation
        • S(c);
    • Try
      • Q(B);
      • Vars
        • S(c);N_GUARD::QAR1(B),XS(c)
        • S(c);N_GUARD::QAR1(B)
        • P(a);OGATEB::QAR(B),XP(a)
      • Refutation
        • S(c);XQ(B)
  • Actual
    • Q(B);
    • Threat
      • QAR2(B),XP(a)
    • Vars
      • K(b);N_GUARD,P-FLIGHT::QAR1(B)
      • P(a);OGATEB,XQ(B)::R(A)
      • S(c);N_GUARD::QAR1(B)
      • S(c);N_GUARD::QAR1(B),XS(c)
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