MESON Chess Problem Database

Problem Display
PID: 119914 (8/1r1p1N1K/2p2p1B/1p3N2/4k3/6p1/Q2PB2n/b5q1 w - - 0 1)

Neunivako, Pavel Efimovich

Shakhmatny Listok, 1926

8/1r1p1N1K/2p2p1B/1p3N2/4k3/6p1/Q2PB2n/b5q1

#2

7 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qd4
      • 2.Sxg3#
    • 1...Bd4
      • 2.S5d6#
    • 1...d5
      • 2.Qc2#
  • Tries
    • 1.Qc4+?
      • 1...Kxf5
        • 2.Bd3#
      • 1...Qd4
        • 2.Sxg3#
        • 2.S5d6#
      • 1...Bd4
        • 2.S5d6#
      • 1...bxc4!
    • 1.Qe6+?
      • 1...Be5
        • 2.S7d6#
        • 2.d3#
      • 1...dxe6!
  • Keys
    • 1.d4!
      • threat
        • 2.S7d6#
      • 1...Kxf5
        • 2.Sd6#
      • 1...Qxd4
        • 2.Sxg3#
      • 1...Bxd4
        • 2.S5d6#
      • 1...d5
        • 2.Qc2#
      • 1...d6
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(b);N_GUARD,SBLOCK::S(D),XP(d)
    • B(a);SBLOCK::S(D)
    • P(j);P_PINS(F),SBLOCK::QAB(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(e);S_FLIGHT,XS(D)::B(C)
        • B(a);P_SPINB(a)::S(D)
      • Refutation
        • P(f);XQ(A)
    • Try
      • Q(A);CHECK
      • Refutation
        • P(j);P_PINS(F),XQ(A)
  • Actual
    • P(B);
    • Threat
      • S(F)
    • Vars
      • K(e);S_FLIGHT,XS(D)::S(F)
      • Q(b);N_GUARD,SBLOCK,XP(B)::S(D),XP(d)
      • B(a);SBLOCK,XP(B)::S(D)
      • P(j);P_PINS(F),SBLOCK::QAB(A)
      • P(j);N_GUARD,P_PINS(F)::QAR2(A)
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Developed and maintained by Brian Stephenson.
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