MESON Chess Problem Database

Problem Display
PID: 246368 (6b1/2BPq2r/pPN1P3/1p1kN1p1/3P4/1P6/4Q2n/1K2R3 w - - 0 1)

Grinblat, Arieh

Shakhmatnaya Poeziya, 2009

6b1/2BPq2r/pPN1P3/1p1kN1p1/3P4/1P6/4Q2n/1K2R3

#2

11 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe6
      • 2.Qe4#
    • 1...Bxe6
      • 2.Qe4#
    • 1...b4
      • 2.Qc4#
  • Tries
    • 1.Sd3?
      • threat
        • 2.Qe4#
      • 1...Kxc6
        • 2.Qe4#
      • 1...Qxe6
        • 2.Sdb4#
      • 1...Rh4!
    • 1.Sg4?
      • threat
        • 2.Qe4#
      • 1...Kxc6
        • 2.Qe4#
      • 1...Qxe6!
    • 1.Sg6?
      • threat
        • 2.Qe4#
      • 1...Kxc6
        • 2.Qe4#
      • 1...Rh4
        • 2.Sgxe7#
      • 1...Qxe6!
    • 1.Sf7?
      • threat
        • 2.Qe4#
      • 1...Kxc6
        • 2.Qe4#
      • 1...Qxe6
        • 2.Qxe6#
      • 1...Rh4!
    • 1.Qf3+?
      • 1...Kxe6
        • 2.d5#
      • 1...Sxf3!
  • Keys
    • 1.Sf3!
      • threat
        • 2.Qe4#
      • 1...Kxc6
        • 2.Qe4#
      • 1...Qxe6
        • 2.Sb4#
      • 1...Rh4
        • 2.Sxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • Q(f);SBLOCK,XP(I)::QAB1(C)
    • B(h);SBLOCK,XP(I)::QAB1(C)
    • P(b);N_GUARD::QAB1(C)
  • Tries
    • Try
      • S(F);
      • Threat
        • QAB1(C)
      • Vars
        • K(c);S_FLIGHT,XS(H)::QAB(C)
        • Q(f);N_GUARD,XP(I)::S(F)
      • Refutation
        • R(g);
    • Try
      • S(F);
      • Threat
        • QAB1(C)
      • Vars
        • K(c);S_FLIGHT,XS(H)::QAB(C)
      • Refutation
        • Q(f);XP(I)
    • Try
      • S(F);
      • Threat
        • QAB1(C)
      • Vars
        • K(c);S_FLIGHT,XS(H)::QAB(C)
        • R(g);N_GUARD::S(F),XQ(f)
      • Refutation
        • Q(f);XP(I)
    • Try
      • S(F);
      • Threat
        • QAB1(C)
      • Vars
        • K(c);S_FLIGHT,XS(H)::QAB(C)
        • Q(f);OGATE,XP(I)::QAB1(C),XQ(f)
      • Refutation
        • R(g);
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT,XP(I)::P(E)
      • Refutation
        • S(a);XQ(C)
  • Actual
    • S(F);
    • Threat
      • QAB1(C)
    • Vars
      • K(c);S_FLIGHT,XS(H)::QAB(C)
      • Q(f);N_GUARD,XP(I)::S(H)
      • R(g);N_GUARD::S(H),XQ(f)
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