MESON Chess Problem Database

Problem Display
PID: 54774 (b2Bq3/8/1Nr1P1p1/QpP2B2/3kPN1R/3P4/8/K3R1b1 w - - 0 1)

Kopaev, Viacheslav Georgievich

2nd Prize, Shakhmatnoe obozrenie, 1995

b2Bq3/8/1Nr1P1p1/QpP2B2/3kPN1R/3P4/8/K3R1b1

#2

12 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...b4
      • 2.Bf6#
  • Tries
    • 1.Sbd5?
      • threat
        • 2.Qc3#
      • 1...Kxc5
        • 2.Qb4#
      • 1...Ke5
        • 2.Bf6#
      • 1...Rxc5
        • 2.Bf6#
      • 1...b4
        • 2.Bf6#
      • 1...Ra6!
    • 1.e5?
      • threat
        • 2.Qb4#
      • 1...Kxc5
        • 2.Qc3#
      • 1...Qxe6
        • 2.Sxe6#
      • 1...Rxc5
        • 2.Sfd5#
      • 1...b4
        • 2.Sfd5#
        • 2.Qxb4#
      • 1...Be3!
  • Keys
    • 1.Sfd5!
      • threat
        • 2.Qc3#
      • 1...Kxd3
        • 2.Qc3#
      • 1...Kxc5
        • 2.Qb4#
      • 1...Ke5
        • 2.Bf6#
      • 1...Rxc5
        • 2.e5#
      • 1...b4
        • 2.e5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(c);::B(L)
  • Tries
    • Try
      • S(J);
      • Threat
        • QAB1(G)
      • Vars
        • K(b);P_SPINP(c),S_FLIGHT,XP(H)::QAB1(G)
        • K(b);S_FLIGHT::B(L)
        • R(d);SBLOCK,XP(H)::B(L)
        • P(c);::B(L)
      • Refutation
        • R(d);P_PINQ(G)
    • Try
      • P(D);
      • Threat
        • QAR2(G)
      • Vars
        • K(b);P_SPINP(c),S_FLIGHT,XP(H)::QAR2(G)
        • Q(g);XP(K)::R(F)+S(E),DCHECK,XQ(g)
        • R(d);SBLOCK,XP(H)::R(F)+S(E)
      • Refutation
        • B(a);
  • Actual
    • S(E);
    • Threat
      • QAB1(G)
    • Vars
      • K(b);P-FLIGHT,XP(C)::QAR1(G)
      • K(b);P_SPINP(c),S_FLIGHT,XP(H)::QAB1(G)
      • K(b);S_FLIGHT::B(L)
      • R(d);SBLOCK,XP(H)::R(F)+P(D)
      • P(c);::R(F)+P(D)
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