MESON Chess Problem Database

Problem Display
PID: 44792 (6bK/4r2p/2RN4/3P1P2/n1PkB1NR/2b3Q1/2P2pP1/4rq2 w - - 0 1)

Bogdanov, Evgeny Mikhailovich

2nd Prize, 64 Shakhmatnoe obozrenie, 1984

6bK/4r2p/2RN4/3P1P2/n1PkB1NR/2b3Q1/2P2pP1/4rq2

#2

12 + 9

3748 FIDE Album (1983-1985) 1992

SOLUTION

  • SOUND
  • Sets
    • 1...Qxg2
      • 2.Qd3#
    • 1...Qd3
      • 2.Qxd3#
    • 1...Qxc4
      • 2.Rxc4#
    • 1...Qg1
      • 2.Qd3#
    • 1...Qh1
      • 2.Qd3#
    • 1...Ra1
      • 2.Qe3#
    • 1...Rb1
      • 2.Qe3#
    • 1...Rc1
      • 2.Qe3#
    • 1...Rd1
      • 2.Qe3#
    • 1...Re2
      • 2.Qd3#
    • 1...Re3
      • 2.Qxe3#
    • 1...R1xe4
      • 2.Sb5#
    • 1...R7xe4
      • 2.Sb5#
    • 1...Re5
      • 2.Qxe5#
    • 1...Ra7
      • 2.Qe5#
    • 1...Rb7
      • 2.Qe5#
    • 1...Rc7
      • 2.Qe5#
    • 1...Rd7
      • 2.Qe5#
    • 1...Rf7
      • 2.Qe5#
    • 1...Rg7
      • 2.Qe5#
    • 1...Be6
      • 2.Qe5#
  • Tries
    • 1.Se3?
      • threat
        • 2.Sb5#
      • 1...Qxc4
        • 2.Rxc4#
      • 1...Rb7
        • 2.Bd3#
      • 1...Rb1!
    • 1.Se5?
      • threat
        • 2.Sb5#
      • 1...Qxc4
        • 2.Rxc4#
      • 1...Rb1
        • 2.Bd3#
      • 1...Rb7!
    • 1.Qxf2+?
      • 1...Re3
        • 2.Qxe3#
      • 1...Qxf2!
    • 1.Qf4?
      • threat
        • 2.Sb5#
      • 1...Qxc4
        • 2.Rxc4#
      • 1...Rb1
        • 2.Qe3#
      • 1...Rb7
        • 2.Qe5#
      • 1...Sc5!
  • Keys
    • 1.Bd3!
      • threat
        • 2.Sb5#
      • 1...Qxd3
        • 2.Qxd3#
      • 1...Rb1
        • 2.Se5#
      • 1...Rb7
        • 2.Se3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 18
  • Sets
    • Q(b);N_GUARD,XP(B)::QAR1(C)
    • Q(b);N_GUARD::QAR1(C),XQ(b)
    • Q(b);OGATE,XP(D)::R1(J),XQ(b)
    • Q(b);N_GUARD::QAR1(C)
    • R(a);N_GUARD::QAB1(C)
    • R(a);S_CUTQ(b)::QAR1(C)
    • R(a);N_GUARD::QAB1(C),XR(a)
    • R(a);SBLOCK,XB(E)::S(K)
    • R(g);SBLOCK,XB(E)::S(K)
    • R(g);N_GUARD::QAB1(C),XR(g)
    • R(g);N_GUARD::QAB1(C)
    • B(i);S_CUTR(g)::QAB1(C)
  • Tries
    • Try
      • S(F);
      • Threat
        • S(K)
      • Vars
        • Q(b);OGATE,XP(D)::R1(J),XQ(b)
        • R(g);N_GUARD::R(G)+B(E)
      • Refutation
        • R(a);
    • Try
      • S(F);
      • Threat
        • S(K)
      • Vars
        • Q(b);OGATE,XP(D)::R1(J),XQ(b)
        • R(a);N_GUARD::R(G)+B(E)
      • Refutation
        • R(g);
    • Try
      • Q(C);CHECK,XP(c)
      • Vars
        • R(a);N_GUARD,P_SPINR(a)::QAB1(C),XR(a)
      • Refutation
        • Q(b);XQ(C)
    • Try
      • Q(C);
      • Threat
        • S(K)
      • Vars
        • Q(b);OGATE,XP(D)::R1(J),XQ(b)
        • R(a);N_GUARD::QAB1(C)
        • R(g);N_GUARD::QAB1(C)
      • Refutation
        • S(e);
  • Actual
    • B(E);
    • Threat
      • S(K)
    • Vars
      • Q(b);OGATE,XB(E)::QAR1(C),XQ(b)
      • R(a);N_GUARD::R(G)+S(F)
      • R(g);N_GUARD::R(G)+S(F)
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