MESON Chess Problem Database

Problem Display
PID: 229428 (b7/3BK1B1/1p1Np3/3k2p1/1P4q1/6N1/2Qb4/2n5 w - - 0 1)

Kopyl, Valery Volodimirovich

Sachova skladba, 2003

b7/3BK1B1/1p1Np3/3k2p1/1P4q1/6N1/2Qb4/2n5

#2

7 + 8

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1
      • 2.Bxe6#
      • 2.Qe4#
      • 2.Qc4#
    • 1...Qf3
      • 2.Bxe6#
      • 2.Qc4#
    • 1...Qh3
      • 2.Qe4#
      • 2.Qc4#
    • 1...Qf5
      • 2.Qc4#
    • 1...Qh5
      • 2.Bxe6#
      • 2.Qe4#
      • 2.Qc4#
    • 1...Qxg3
      • 2.Bxe6#
      • 2.Qe4#
      • 2.Qc4#
    • 1...Qxb4
      • 2.Bxe6#
    • 1...Qc4
      • 2.Qxc4#
    • 1...Qd4
      • 2.Bxe6#
    • 1...Qe4
      • 2.Qxe4#
    • 1...Qf4
      • 2.Bxe6#
    • 1...Qh4
      • 2.Bxe6#
    • 1...Bf4
      • 2.Qe4#
      • 2.Qc4#
    • 1...Bc6
      • 2.Bxc6#
      • 2.Qxc6#
    • 1...b5
      • 2.Qc5#
  • Tries
    • 1.Sgf5?
      • threat
        • 2.Bxe6#
      • 1...Qxf5
        • 2.Qc4#
      • 1...exf5
        • 2.Be6#
      • 1...Qc4
        • 2.Qxc4#
      • 1...Qe4
        • 2.Qxe4#
      • 1...Bc3
        • 2.Se3#
      • 1...e5
        • 2.Be6#
      • 1...Qe2!
    • 1.Qb3+?
      • 1...Qc4
        • 2.Qxc4#
      • 1...Sxb3!
    • 1.Qd3+?
      • 1...Qd4
        • 2.Qxd4#
      • 1...Sxd3!
    • 1.Qa2+?
      • 1...Qc4
        • 2.Qxc4#
      • 1...Sb3
        • 2.Qxa8#
      • 1...Sxa2!
    • 1.Qxd2+?
      • 1...Qd4
        • 2.Qxd4#
      • 1...Sd3!
  • Keys
    • 1.Sge4!
      • threat
        • 2.Qc4#
      • 1...Qxe4
        • 2.Qxe4#
      • 1...Qe2
        • 2.Bxe6#
      • 1...Bc3
        • 2.Sxc3#
      • 1...b5
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • Q(c);N_GUARD::QAB1(A)
    • Q(c);N_GUARD,P_PINS(D),XP(C)::B(E),XP(g)
    • Q(c);N_GUARD::QAB1(A),XQ(c)
    • Q(c);N_GUARD::B(E),XP(g)
    • P(f);N_GUARD::QAR1(A)
  • Tries
    • Try
      • S(B);
      • Threat
        • B(E),XP(g)
      • Vars
        • Q(c);N_GUARD,XS(B)::QAB1(A)
        • P(g);XS(B)::B(E)
        • Q(c);N_GUARD::QAB1(A),XQ(c)
        • B(b);N_GUARD::S(B)
        • P(g);::B(E)
      • Refutation
        • Q(c);
    • Try
      • Q(A);CHECK
      • Vars
        • Q(c);N_GUARD,P_SPINQ(c)::QAB1(A),XQ(c)
      • Refutation
        • S(a);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • Q(c);N_GUARD,P_SPINQ(c)::QAR1(A),XQ(c)
      • Refutation
        • S(a);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • Q(c);N_GUARD,P_SPINQ(c)::QAB1(A),XQ(c)
        • S(a);P_SPINS(a)::QAB(A),XB(h)
      • Refutation
        • S(a);XQ(A)
    • Try
      • Q(A);CHECK,XB(b)
      • Vars
        • Q(c);N_GUARD,P_SPINQ(c)::QAR1(A),XQ(c)
      • Refutation
        • S(a);P_SPINS(a)
  • Actual
    • S(B);
    • Threat
      • QAB1(A)
    • Vars
      • Q(c);OGATE,XS(B)::QAB1(A),XQ(c)
      • Q(c);N_GUARD::B(E),XP(g)
      • B(b);N_GUARD::S(B),XB(b)
      • P(f);N_GUARD::QAR1(A)
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