MESON Chess Problem Database

Problem Display
PID: 240363 (6b1/q2B2rn/8/1Q2P1pN/4k1N1/1PP1p1pp/2P3P1/2n1K3 w - - 0 1)

Pituk, Alexander

Tijdschrift vd KNSB, 1949

6b1/q2B2rn/8/1Q2P1pN/4k1N1/1PP1p1pp/2P3P1/2n1K3

#2

10 + 10

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...Sf6
      • 2.Sgxf6#
    • 1...Sf8
      • 2.Sgf6#
  • Tries
    • 1.Shf6+?
      • 1...Kf4
        • 2.Qf1#
      • 1...Sxf6!
    • 1.Qc4+?
      • 1...Qd4
        • 2.Qxd4#
      • 1...Bxc4!
    • 1.Qb4+?
      • 1...Kd5
        • 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#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(h);S_CUTB(j)::QAB(G)
    • S(a);N_GUARD::QAB1(G)
    • S(a);N_GUARD,XP(D)::QAB1(G)
    • S(i);N_GUARD::S(F),XS(i)
    • S(i);N_GUARD::S(F)
  • Tries
    • Try
      • S(I);CHECK
      • Vars
        • K(e);P-FLIGHT::QAR(G)
      • Refutation
        • S(i);XS(I)
    • Try
      • Q(G);CHECK
      • Vars
        • Q(g);N_GUARD,P_SPINQ(g)::QAR1(G),XQ(g)
      • Refutation
        • B(j);XQ(G)
    • Try
      • Q(G);CHECK
      • Vars
        • K(e);S_FLIGHT::QAB1(G)
        • Q(g);N_GUARD,P_SPINQ(g)::QAR1(G),XQ(g)
      • Refutation
        • B(j);P_SPINB(j)
  • 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(h);S_CUTB(j)::B(J)
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