MESON Chess Problem Database

Problem Display
PID: 110110 (q3Q3/2P1N2b/1r6/2PpB1p1/2pPk1P1/7R/B3N3/1n5K w - - 0 1)

Kopaev, Viacheslav Georgievich

HM., Kudesnik, 1991

q3Q3/2P1N2b/1r6/2PpB1p1/2pPk1P1/7R/B3N3/1n5K

#2

11 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ra6
      • 2.Bxb1#
    • 1...Rc6
      • 2.Bxb1#
    • 1...Rd6
      • 2.Bxb1#
    • 1...Re6
      • 2.Bxb1#
    • 1...Rf6
      • 2.Bxb1#
    • 1...Rg6
      • 2.Bxb1#
    • 1...Rh6
      • 2.Bxb1#
    • 1...Sd2
      • 2.Sc3#
    • 1...Sa3
      • 2.Sc3#
    • 1...Sc3
      • 2.Sxc3#
  • Tries
    • 1.Sf5?
      • threat
        • 2.Re3#
      • 1...Qa3
        • 2.Bd6#
      • 1...Rb3
        • 2.Sd6#
      • 1...Rh6
        • 2.Bxb1#
      • 1...Bxf5!
    • 1.Bf4?
      • threat
        • 2.Re3#
      • 1...Qa3
        • 2.Sc6#
      • 1...Rb3
        • 2.Sc8#
      • 1...Rh6
        • 2.Bxb1#
      • 1...gxf4!
    • 1.Qg6+?
      • 1...Rxg6
        • 2.Bxb1#
      • 1...Bxg6!
  • Keys
    • 1.Qf7!
      • threat
        • 2.Qf3#
      • 1...Qa3
        • 2.Qxd5#
      • 1...Qf8
        • 2.Qxd5#
      • 1...Rb3
        • 2.Qxh7#
      • 1...Rf6
        • 2.Bxb1#
      • 1...Bf5
        • 2.Qxf5#
      • 1...Sd2
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 8
  • Sets
    • R(f);N_GUARD::B(B),XS(a)
    • R(f);N_GUARD,P_PINR(D)::B(B),XS(a)
    • S(a);N_GUARD::S(C)
    • S(a);N_GUARD::S(C),XS(a)
  • Tries
    • Try
      • S(J);
      • Threat
        • R1(D)
      • Vars
        • Q(h);N_GUARD::QAR(K)+B(H)
        • R(f);N_GUARD::S(J)
        • R(f);N_GUARD,P_PINR(D)::B(B),XS(a)
      • Refutation
        • B(g);XS(J)
    • Try
      • B(H);
      • Threat
        • R1(D)
      • Vars
        • Q(h);N_GUARD::QAR(K)+S(J)
        • R(f);N_GUARD::QAR(K)+S(J)
        • R(f);N_GUARD,P_PINR(D)::B(B),XS(a)
      • Refutation
        • P(e);XB(H)
    • Try
      • Q(K);CHECK
      • Vars
        • R(f);XQ(K)::B(B),XS(a)
      • Refutation
        • B(g);XQ(K)
  • Actual
    • Q(K);
    • Threat
      • QAB1(K)
    • Vars
      • Q(h);N_GUARD::QAB1(K),XP(d)
      • R(f);N_GUARD::QAB(K),XB(g)
      • R(f);N_GUARD::B(B),XS(a)
      • B(g);N_GUARD::QAB1(K),XB(g)
      • S(a);N_GUARD::S(C)
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