MESON Chess Problem Database

Problem Display
PID: 125412 (Q7/8/8/8/1r1N2b1/8/3p4/4k1K1 w - - 0 1)

Pelchikova, Ninel

Sp. Prize, Sverdlovsk Young Composers Ty. (Na Smenu!), 1950

Q7/8/8/8/1r1N2b1/8/3p4/4k1K1

#2

3 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qe4+?
      • 1...Be2
        • 2.Qxe2#
      • 1...Kd1!
  • Keys
    • 1.Qg2!
      • threat
        • 2.Qf1#
      • 1...Kd1
        • 2.Qf1#
      • 1...d1Q
        • 2.Qf2#
      • 1...d1S
        • 2.Sc2#
      • 1...d1B
        • 2.Qf2#
      • 1...d1R
        • 2.Sc2#
        • 2.Qf2#
      • 1...Be2
        • 2.Qxe2#
      • 1...Bh3
        • 2.Qe2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • B(d);N_GUARD,P_SPINB(d)::QAR1(C),XB(d)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(C);
    • Threat
      • QAR1(C)
    • Vars
      • K(a);P-FLIGHT::QAR2(C)
      • P(b);SBLOCK::QAB1(C)
      • P(b);SBLOCK::S(B)
      • B(d);N_GUARD::QAR1(C),XB(d)
      • B(d);N_GUARD::QAR1(C)
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