MESON Chess Problem Database

Problem Display
PID: 61173 (4n3/8/pp6/3Q4/Np1P1pp1/p2k1PN1/1P1B4/R3K3 w Q - 0 1)

Vakhlakov, Yuri Nikolaevich

2nd HM., Uralski Problemist, 2001

4n3/8/pp6/3Q4/Np1P1pp1/p2k1PN1/1P1B4/R3K3

#2

9 + 8

4393 Uralski Problemist 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Kc2
      • 2.Qc4#
  • Tries
    • 1.Se2?
      • threat
        • 2.Qb3#
      • 1...Kc2
        • 2.Qc4#
      • 1...b3
        • 2.Qxb3#
      • 1...gxf3!
    • 1.Sf5?
      • threat
        • 2.Qb3#
      • 1...Kc2
        • 2.Qc4#
      • 1...b3
        • 2.Qxb3#
      • 1...gxf3!
    • 1.Sc5+?
      • 1...Kc2
        • 2.Qb3#
      • 1...bxc5!
    • 1.Bxf4?
      • threat
        • 2.0-0-0#
      • 1...Kc2
        • 2.Qc4#
      • 1...axb2!
    • 1.Rc1?
      • threat
        • 2.Qc4#
        • 2.Qe4#
      • 1...Sf6
        • 2.Qc4#
      • 1...b5
        • 2.Sc5#
        • 2.Qe4#
      • 1...Sd6!
    • 1.Qb5+?
      • 1...Kc2
        • 2.Qc4#
      • 1...Kxd4
        • 2.Se2#
        • 2.Sf5#
      • 1...axb5!
    • 1.Qf5+?
      • 1...Kxd4
        • 2.Qe4#
      • 1...Kc4!
    • 1.b3?
      • threat
        • 2.Qc4#
        • 2.Qe4#
      • 1...Kc2
        • 2.Qc4#
      • 1...Sf6
        • 2.Qc4#
      • 1...b5
        • 2.Qe4#
      • 1...Sd6!
    • 1.0-0-0?
      • threat
        • 2.Bxf4#
      • 1...axb2+
        • 2.Sxb2#
      • 1...fxg3!
  • Keys
    • 1.Be3!
      • threat
        • 2.Qb3#
      • 1...Kc2
        • 2.Qc4#
      • 1...Kxe3
        • 2.Qe4#
      • 1...fxe3
        • 2.0-0-0#
      • 1...b3
        • 2.Qxb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAR2(I)
  • Tries
    • Try
      • S(F);
      • Threat
        • QAR2(I)
      • Vars
        • K(b);S_FLIGHT::QAR2(I)
        • P(c);::QAR2(I),XP(c)
      • Refutation
        • P(e);XP(E)
    • Try
      • S(F);
      • Threat
        • QAR2(I)
      • Vars
        • K(b);S_FLIGHT::QAR2(I)
        • P(c);::QAR2(I),XP(c)
      • Refutation
        • P(e);XP(E)
    • Try
      • S(G);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(I)
      • Refutation
        • P(g);XS(G)
    • Try
      • B(D);XP(d)
      • Threat
        • 0-0-0
      • Vars
        • K(b);S_FLIGHT::QAR2(I)
      • Refutation
        • P(a);XP(C)
    • Try
      • R(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(h);::QAB1(I)
      • Refutation
        • S(h);
    • Try
      • Q(I);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR2(I)
      • Refutation
        • P(f);XQ(I)
    • Try
      • Q(I);CHECK
      • Vars
        • K(b);P-FLIGHT,XP(H)::QAR1(I)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • P(C);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);S_FLIGHT::QAR2(I)
        • S(h);::QAB1(I)
        • P(g);::QAB1(I)
      • Refutation
        • S(h);
    • Try
      • K(B);0-0-0
      • Threat
        • R(A)+B(D),XP(d)
      • Vars
        • P(a);CHECK,XP(C)::S(G),XP(a)
      • Refutation
        • P(d);XS(F)
  • Actual
    • B(D);
    • Threat
      • QAR2(I)
    • Vars
      • K(b);S_FLIGHT::QAR2(I)
      • K(b);P-FLIGHT,XB(D)::QAR1(I)
      • P(d);SBLOCK,XB(D)::0-0-0
      • P(c);::QAR2(I),XP(c)
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