MESON Chess Problem Database

Problem Display
PID: 240364 (6b1/q2B2rn/6p1/1Q2P2N/4k1Nb/1PP1p1pp/2P3P1/2n1K3 w - - 0 1)

Pituk, Alexander

Tijdschrift vd KNSB, 1949

6b1/q2B2rn/6p1/1Q2P2N/4k1Nb/1PP1p1pp/2P3P1/2n1K3

#2

10 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rf7
      • 2.Qc6#
    • 1...Sa2
      • 2.Qd3#
    • 1...Se2
      • 2.Qd3#
    • 1...Sxb3
      • 2.Qd3#
    • 1...Sd3+
      • 2.Qxd3#
      • 2.cxd3#
    • 1...Sg5
      • 2.Sgf6#
  • Tries
    • 1.Qc4+?
      • 1...Qd4
        • 2.Qxd4#
      • 1...Bxc4!
    • 1.Qb4+?
      • 1...Kd5
        • 2.Sf4#
        • 2.Qc4#
      • 1...Qd4
        • 2.Qxd4#
      • 1...Bc4!
  • Keys
    • 1.Qf1!
      • threat
        • 2.Qf3#
      • 1...Sd3+
        • 2.Qxd3#
      • 1...Kd5
        • 2.Qc4#
      • 1...hxg2
        • 2.Qxg2#
      • 1...Rf7
        • 2.Bc6#
      • 1...Sg5
        • 2.Shf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • R(i);S_CUTB(k)::QAB(G)
    • S(a);N_GUARD::QAB1(G)
    • S(a);N_GUARD,XP(D)::QAB1(G)
    • S(j);N_GUARD,S_CUTB(f)::S(F)
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • Q(h);N_GUARD,P_SPINQ(h)::QAR1(G),XQ(h)
      • Refutation
        • B(k);XQ(G)
    • Try
      • Q(G);CHECK
      • Vars
        • Q(h);N_GUARD,P_SPINQ(h)::QAR1(G),XQ(h)
      • Refutation
        • B(k);P_SPINB(k)
  • Actual
    • Q(G);
    • Threat
      • QAB1(G)
    • Vars
      • S(a);CHECK,N_GUARD::QAB1(G),XS(a)
      • K(e);S_FLIGHT::QAB1(G)
      • P(d);OGATE,XP(C)::QAB(G),XP(d)
      • R(i);S_CUTB(k)::B(J)
      • S(j);N_GUARD,S_CUTB(f)::S(I)
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