MESON Chess Problem Database

Problem Display
PID: 64774 (1n5K/1Np2p2/q1p2Q2/1Rnk1Pp1/r2Np3/1P3P2/8/Bbr1R1b1 w - - 0 1)

Erokhin, Vladimir Alekseevich

Prize, Kharkov TT, 1981

1n5K/1Np2p2/q1p2Q2/1Rnk1Pp1/r2Np3/1P3P2/8/Bbr1R1b1

#2

10 + 13

3752 FIDE Album (1980-1982) 1988

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Rxc5#
    • 1...Rxe1
      • 2.Rxc5#
    • 1...Rc2
      • 2.fxe4#
    • 1...Ba2
      • 2.fxe4#
    • 1...Bc2
      • 2.Rxc5#
    • 1...exf3
      • 2.Re5#
      • 2.Qe5#
      • 2.Qxf7#
  • Tries
    • 1.Sc2?
      • threat
        • 2.Qe5#
        • 2.Qxf7#
      • 1...Qxb5
        • 2.Qe5#
      • 1...Qxb7
        • 2.Qe5#
      • 1...Rxa1
        • 2.Sb4#
        • 2.fxe4#
      • 1...Rd4
        • 2.Rxc5#
      • 1...Bh2
        • 2.Se3#
        • 2.Rxc5#
        • 2.Qxf7#
      • 1...Bd4
        • 2.fxe4#
      • 1...Sd7
        • 2.Qxf7#
      • 1...cxb5!
    • 1.Se6?
      • threat
        • 2.Sxc7#
        • 2.Qe5#
      • 1...Qxb7
        • 2.Qe5#
      • 1...Rxa1
        • 2.Sxc7#
      • 1...cxb5
        • 2.Sxc7#
      • 1...fxe6
        • 2.Qe5#
        • 2.Qxe6#
      • 1...Qa5
        • 2.Qe5#
      • 1...Qb6
        • 2.Qe5#
      • 1...Rc3
        • 2.Sxc7#
      • 1...Rd4
        • 2.Sxc7#
      • 1...Bd4
        • 2.Sxc7#
      • 1...Sd7
        • 2.Sxc7#
      • 1...Bh2!
  • Keys
    • 1.Sxc6!
      • threat
        • 2.Se7#
      • 1...Qxc6
        • 2.Qe5#
      • 1...Sxc6
        • 2.Qxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • R(b);N_GUARD::R1(F),XS(f)
    • R(b);N_GUARD,XR(B)::R1(F),XS(f)
    • R(b);S_CUTB(a)::P(D),XP(e)
    • B(a);N_GUARD::P(D),XP(e)
    • B(a);S_CUTR(b)::R1(F),XS(f)
  • Tries
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • Q(i);N_SPINS(f),XR(F)::QAR1(H)
        • Q(i);XS(I)::QAR1(H)
        • R(d);S_CUTB(c)::R1(F),XS(f)
        • B(c);P_PINQ(H),S_CUTR(d)::P(D),XP(e)
        • S(m);::QAB(H),XP(l)
      • Refutation
        • P(j);N_SPINS(f),XR(F)
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • Q(i);XS(I)::QAR1(H)
        • R(d);XB(A)::S(E),XP(k)
        • P(j);N_SPINS(f),XR(F)::S(E),XP(k)
        • Q(i);::QAR1(H)
        • R(b);::S(E),XP(k)
        • R(d);::S(E),XP(k)
        • B(c);P_PINQ(H)::S(E),XP(k)
        • S(m);::S(E),XP(k)
      • Refutation
        • B(c);
  • Actual
    • S(E);XP(j)
    • Threat
      • S(E)
    • Vars
      • Q(i);SBLOCK,XS(E)::QAR1(H)
      • S(m);SBLOCK,XS(E)::QAB(H),XP(l)
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