MESON Chess Problem Database

Problem Display
PID: 239130 (3N4/2pp3R/2pkPK2/2nPn3/4p1p1/p7/qpRQ4/8 w - - 0 1)

Dyachuk, Vasyl Vasilovich

Sachove umeni (Ceskoslovensky sach), 1996

3N4/2pp3R/2pkPK2/2nPn3/4p1p1/p7/qpRQ4/8

#2

7 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sb3
      • 2.Sb7#
    • 1...Sa4
      • 2.Sb7#
    • 1...Sa6
      • 2.Sb7#
    • 1...Sxe6
      • 2.Sb7#
    • 1...Sb7
      • 2.Sxb7#
    • 1...Sf3
      • 2.Sf7#
    • 1...Sc4
      • 2.Sf7#
    • 1...Sg6
      • 2.Sf7#
    • 1...Sf7
      • 2.Sxf7#
  • Tries
    • 1.Qb4?
      • threat
        • 2.Qxc5#
      • 1...Kxd5
        • 2.Qxc5#
      • 1...Qxd5
        • 2.Sb7#
      • 1...Sd3
        • 2.Rxd7#
      • 1...Sc4
        • 2.Rxd7#
      • 1...Qc4!
    • 1.Qh2?
      • threat
        • 2.Qxe5#
      • 1...Kxd5
        • 2.Qxe5#
      • 1...Qxd5
        • 2.Sf7#
      • 1...Sd3
        • 2.Rxd7#
      • 1...g3!
    • 1.Qd4?
      • threat
        • 2.Qxc5#
        • 2.Qxe5#
      • 1...Sxe6
        • 2.Sb7#
        • 2.Qxe5#
      • 1...Scd3
        • 2.Sb7#
      • 1...Qc4
        • 2.Qxe5#
      • 1...Sb3
        • 2.Sb7#
        • 2.Qxe5#
      • 1...Sa4
        • 2.Sb7#
        • 2.Qxe5#
      • 1...Sa6
        • 2.Sb7#
        • 2.Qxe5#
      • 1...Sb7
        • 2.Sxb7#
        • 2.Qxe5#
      • 1...Sed3
        • 2.Sf7#
      • 1...Sf3
        • 2.Sf7#
        • 2.Qxc5#
      • 1...Sc4
        • 2.Sf7#
        • 2.dxc6#
      • 1...Sg6
        • 2.Sf7#
        • 2.Qxc5#
      • 1...Sf7
        • 2.Sxf7#
        • 2.Qxc5#
      • 1...Qxd5!
  • Keys
    • 1.Qf4!
      • threat
        • 2.Qxe5#
      • 1...Kxd5
        • 2.Qxe5#
      • 1...Qxd5
        • 2.Sf7#
      • 1...Sd3
        • 2.Rxd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 9
  • Sets
    • S(f);N_GUARD::S(G)
    • S(f);N_GUARD,XP(D)::S(G)
    • S(f);N_GUARD::S(G),XS(f)
    • S(g);N_GUARD::S(G)
    • S(g);N_GUARD::S(G),XS(g)
  • Tries
    • Try
      • Q(B);P_PINS(f)
      • Threat
        • QAB1(B),XS(f)
      • Vars
        • K(i);N_SPINS(f),P-FLIGHT,XP(C)::QAR1(B),XS(f)
        • Q(a);SBLOCK,XP(C)::S(G)
        • S(g);N_GUARD::R1(F),XP(k)
      • Refutation
        • Q(a);
    • Try
      • Q(B);P_PINS(g)
      • Threat
        • QAB1(B),XS(g)
      • Vars
        • K(i);N_SPINS(g),P-FLIGHT,XP(C)::QAR1(B),XS(g)
        • Q(a);SBLOCK,XP(C)::S(G)
        • S(f);N_GUARD::R1(F),XP(k)
      • Refutation
        • P(e);N_SPINS(g)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • S(f);N_GUARD::S(G)
        • Q(a);::QAB1(B),XS(g)
        • S(g);N_GUARD::S(G)
      • Refutation
        • Q(a);P_SPINQ(a),XP(C)
  • Actual
    • Q(B);P_PINS(g)
    • Threat
      • QAB1(B),XS(g)
    • Vars
      • K(i);N_SPINS(g),P-FLIGHT,XP(C)::QAR1(B),XS(g)
      • Q(a);SBLOCK,XP(C)::S(G)
      • S(f);N_GUARD::R1(F),XP(k)
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