MESON Chess Problem Database

Problem Display
PID: 243632 (QR4K1/2pp2B1/3p4/p2N4/2k1N3/4q3/2Pb4/8 w - - 0 1)

Balcu, Silviu

Revista Romana de Sah, 1958

QR4K1/2pp2B1/3p4/p2N4/2k1N3/4q3/2Pb4/8

#2

7 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qc5
      • 2.Sxd2#
    • 1...Be1
      • 2.Sxe3#
    • 1...Bc3
      • 2.Sxe3#
    • 1...Bb4
      • 2.Sxe3#
    • 1...c5
      • 2.Sxd6#
  • Tries
    • 1.Qc6+?
      • 1...Qc5
        • 2.Sxd2#
      • 1...dxc6!
  • Keys
    • 1.Qxa5!
      • threat
        • 2.Qb5#
      • 1...Bxa5
        • 2.Sxe3#
      • 1...Qc5
        • 2.Qa2#
      • 1...c5
        • 2.Sb6#
      • 1...Qb6
        • 2.Sxd2#
      • 1...Qb3
        • 2.Sxd2#
      • 1...c6
        • 2.Sxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • Q(b);N_GUARD,SBLOCK::S(B),XB(a)
    • B(a);N_GUARD::S(C),XQ(b)
    • P(f);N_GUARD,SBLOCK::S(B),XP(e)
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • Q(b);P_SPINQ(b)::S(B),XB(a)
      • Refutation
        • P(g);XQ(E)
  • Actual
    • Q(E);XP(d)
    • Threat
      • QAB1(E)
    • Vars
      • B(a);N_GUARD,XQ(E)::S(C),XQ(b)
      • Q(b);N_GUARD::QAB(E)
      • P(f);N_GUARD,S_CUTQ(b)::S(C)
      • Q(b);N_GUARD::S(B),XB(a)
      • P(f);N_GUARD::S(B),XP(e)
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