MESON Chess Problem Database

Problem Display
PID: 3169 (5R2/QpK1P3/4P3/1P1Bk1B1/1NP1N1bp/3p2br/3P3r/5q2 w - - 0 1)

Niemeijer, Meindert

Mededelingenblad, 1943

5R2/QpK1P3/4P3/1P1Bk1B1/1NP1N1bp/3p2br/3P3r/5q2

#2

12 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qe2
      • 2.Qa1#
    • 1...Qg2
      • 2.Sxd3#
      • 2.Qa1#
    • 1...Qa1
      • 2.Sxd3#
      • 2.Qxa1#
    • 1...Qc1
      • 2.Sxd3#
    • 1...Qd1
      • 2.Sxd3#
    • 1...Qe1
      • 2.Sxd3#
    • 1...Qg1
      • 2.Sxd3#
    • 1...Qh1
      • 2.Sxd3#
    • 1...Qf2
      • 2.Sxd3#
    • 1...Qf3
      • 2.Qa1#
    • 1...Qf4
      • 2.Sxd3#
      • 2.Qa1#
    • 1...Qf5
      • 2.Sxd3#
      • 2.Qa1#
    • 1...Re2
      • 2.Sxd3#
    • 1...Be1
      • 2.Qa1#
    • 1...Bf2
      • 2.Bf4#
    • 1...Bd1
      • 2.Qa1#
    • 1...b6
      • 2.Sc6#
  • Tries
    • 1.Bf4+?
      • 1...Qxf4
        • 2.Sxd3#
        • 2.Qa1#
      • 1...Bxf4!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Qe3#
      • 1...b6
        • 2.Sc6#
      • 1...Bf5
        • 2.Sf7#
      • 1...Qe2
        • 2.Qa1#
      • 1...Qg2
        • 2.Sxd3#
        • 2.Qa1#
      • 1...Qe1
        • 2.Sxd3#
      • 1...Qg1
        • 2.Sxd3#
      • 1...Qh1
        • 2.Sxd3#
      • 1...Qf2
        • 2.Sxd3#
      • 1...Qf3
        • 2.Qa1#
      • 1...Qf4
        • 2.Sxd3#
      • 1...Qf5
        • 2.Qa1#
      • 1...Re2
        • 2.Sxd3#
      • 1...Be1
        • 2.Qa1#
      • 1...Bf2
        • 2.Bf4#
      • 1...Bf4
        • 2.Bf6#
      • 1...Bf3
        • 2.Rf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • Q(a);N_GUARD::QAB(I)
    • Q(a);N_GUARD,P_PINP(C)::S(B),XP(c)
    • Q(a);N_GUARD::S(B),XP(c)
    • R(b);S_CUTQ(a)::S(B),XP(c)
    • B(d);S_CUTQ(a)::QAB(I)
    • B(d);N_GUARD,S_CUTQ(a)::B(G)
    • B(f);S_CUTQ(a)::QAB(I)
    • P(i);N_GUARD::S(B)
  • Tries
    • Try
      • B(G);CHECK
      • Refutation
        • B(d);XB(G)
  • Actual
    • S(D);
    • Threat
      • QAR2(I)
    • Vars
      • P(i);N_GUARD::S(B)
      • B(f);SBLOCK,S_CUTQ(a)::S(D)
      • Q(a);N_GUARD::QAB(I)
      • Q(a);N_GUARD::S(B),XP(c)
      • R(b);S_CUTQ(a)::S(B),XP(c)
      • B(d);S_CUTQ(a)::QAB(I)
      • B(d);N_GUARD,S_CUTQ(a)::B(G)
      • B(d);SBLOCK,S_CUTQ(a)::B(G)
      • B(f);N_GUARD,S_CUTQ(a)::R1(L)
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