MESON Chess Problem Database

Problem Display
PID: 17666 (2R1R3/1qp1b3/B2N4/1n2PQ2/1P1kP3/1P6/1n1BP1K1/8 w - - 0 1)

Pituk, Alexander

1st Prize, Praca, 1948/I

2R1R3/1qp1b3/B2N4/1n2PQ2/1P1kP3/1P6/1n1BP1K1/8

#2

12 + 6

3105 FIDE Album (1945-1955) 1964

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe4+
      • 2.Qxe4#
    • 1...Qa8
      • 2.Sxb5#
    • 1...Qxc8
      • 2.Sxb5#
    • 1...Qa7
      • 2.Sxb5#
    • 1...Bf6
      • 2.Qf2#
    • 1...Bd8
      • 2.Qf2#
    • 1...Bf8
      • 2.Qf2#
    • 1...Sd3
      • 2.e3#
    • 1...Sa3
      • 2.e3#
    • 1...Sc3
      • 2.e3#
    • 1...Sxd6
      • 2.e3#
    • 1...Sa7
      • 2.e3#
  • Keys
    • 1.Qf4!
      • threat
        • 2.Sf5#
      • 1...Qxe4+
        • 2.Qxe4#
      • 1...Qxc8
        • 2.Sxb5#
      • 1...Bxd6
        • 2.Qe3#
      • 1...Sxd6
        • 2.e3#
      • 1...cxd6
        • 2.Be3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 9
  • Sets
    • Q(d);CHECK,OGATE,XP(F)::QAR1(H),XQ(d)
    • Q(d);N_GUARD::S(J),XS(c)
    • Q(d);N_GUARD,N_PINP(F),XR(K)::S(J),XS(c)
    • Q(d);N_GUARD,N_PINP(F)::S(J),XS(c)
    • B(f);::QAB(H)
    • S(a);SBLOCK::P(B)
    • S(c);::P(B)
    • S(c);XS(J)::P(B)
  • Actual
    • Q(H);
    • Threat
      • S(J)
    • Vars
      • Q(d);CHECK,OGATE,P_SPINQ(d),XP(F)::QAR1(H),XQ(d)
      • Q(d);N_GUARD,N_PINP(F),XR(K)::S(J),XS(c)
      • B(f);XS(J)::QAB1(H)
      • S(c);XS(J)::P(B)
      • P(e);XS(J)::B(A)
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