MESON Chess Problem Database

Problem Display
PID: 107456 (2Q5/K4B2/3p4/p2p4/3knB2/3P1q2/N2p1P2/2N5 w - - 0 1)

Aschenazi, Marcel

Club Constructorul, 1955

2Q5/K4B2/3p4/p2p4/3knB2/3P1q2/N2p1P2/2N5

#2

8 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qe3
      • 2.fxe3#
    • 1...Sxf2
      • 2.Qc3#
    • 1...Sc3
      • 2.Qxc3#
    • 1...Sg3
      • 2.Qc3#
    • 1...Sc5
      • 2.Qh8#
    • 1...Sg5
      • 2.Qc3#
    • 1...Sf6
      • 2.Qc3#
  • Tries
    • 1.Be3+?
      • 1...Ke5
        • 2.Qe6#
      • 1...Qxe3!
    • 1.Qb7?
      • threat
        • 2.Qxd5#
      • 1...Kc5
        • 2.Sb3#
        • 2.Qxd5#
        • 2.Qb6#
      • 1...Sxf2
        • 2.Qb6#
      • 1...Sc3
        • 2.Qb6#
      • 1...Sg3
        • 2.Qb6#
      • 1...Sc5
        • 2.Qb2#
      • 1...Sg5
        • 2.Qb6#
      • 1...Sf6
        • 2.Qb6#
      • 1...Qh5!
  • Keys
    • 1.Qf5!
      • threat
        • 2.Qxd5#
      • 1...Kc5
        • 2.Qxd5#
      • 1...Sxf2
        • 2.Sb3#
      • 1...Qh5
        • 2.Be3#
      • 1...Sc3
        • 2.Sb3#
      • 1...Sg3
        • 2.Sb3#
      • 1...Sc5
        • 2.Qf6#
      • 1...Sg5
        • 2.Sb3#
      • 1...Sf6
        • 2.Sb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 6
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • Q(b);OGATE::P(C),XQ(b)
    • S(d);N_GUARD,XP(C)::QAB1(H)
    • S(d);N_GUARD::QAB1(H),XS(d)
    • S(d);N_GUARD::QAB1(H)
    • S(d);N_GUARD,SBLOCK::QAB(H)
  • Tries
    • Try
      • B(E);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR1(H)
      • Refutation
        • Q(b);XB(E)
    • Try
      • Q(H);
      • Threat
        • QAR1(H),XP(f)
      • Vars
        • S(d);N_GUARD,XP(C)::QAB(H)
        • S(d);N_GUARD::QAB(H)
        • S(d);N_GUARD,SBLOCK::QAB(H)
      • Refutation
        • Q(b);
  • Actual
    • Q(H);
    • Threat
      • QAR1(H),XP(f)
    • Vars
      • K(c);P_SPINP(f),S_FLIGHT::QAR1(H),XP(f)
      • S(d);XP(C)::S(A)
      • Q(b);N_GUARD::B(E)
      • S(d);::S(A)
      • S(d);N_GUARD,SBLOCK::QAB(H)
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