MESON Chess Problem Database

Problem Display
PID: 187355 (7B/7Q/6q1/N6b/6p1/p5b1/2kP1N2/n2R3K w - - 0 1)

Dragoescu, Radu

Suomen Shakki, 1982

7B/7Q/6q1/N6b/6p1/p5b1/2kP1N2/n2R3K

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qd3
      • 2.Qxd3#
    • 1...Qe4+
      • 2.Qxe4#
    • 1...Qf5
      • 2.Qxf5#
  • Tries
    • 1.Qc7+?
      • 1...Qc6+
        • 2.Qxc6#
      • 1...Bxc7!
  • Keys
    • 1.Qb7!
      • threat
        • 2.Qb1#
      • 1...Qe4+
        • 2.Qxe4#
      • 1...Qc6+
        • 2.Qxc6#
      • 1...Qb6
        • 2.Qe4#
      • 1...Sb3
        • 2.Qxb3#
      • 1...a2
        • 2.Qb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • Q(g);OGATE::QAB1(F),XQ(g)
    • Q(g);CHECK,OGATE::QAB(F),XQ(g)
    • Q(g);OGATE::QAB(F),XQ(g)
  • Tries
    • Try
      • Q(F);CHECK,N_PINQ(g)
      • Vars
        • Q(g);CHECK,N_GUARD,P_SPINQ(g)::QAR(F),XQ(g)
      • Refutation
        • B(d);XQ(F)
  • Actual
    • Q(F);N_PINQ(g)
    • Threat
      • QAB1(F)
    • Vars
      • Q(g);CHECK,N_GUARD::QAB(F),XQ(g)
      • Q(g);CHECK,N_GUARD::QAR(F),XQ(g)
      • Q(g);N_GUARD::QAB(F)
      • S(a);N_GUARD::QAB1(F),XS(a)
      • P(c);N_GUARD::QAR1(F)
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