MESON Chess Problem Database

Problem Display
PID: 42488 (r3k3/p2p4/P2Q1R1b/8/4N1p1/rN2B1pq/p7/K1R4b w q - 0 1)

Chernyavsky, Mykola Vasilovich

Shedey, Sergey Oleksandrovich

1st Prize, Odessa, 1984

r3k3/p2p4/P2Q1R1b/8/4N1p1/rN2B1pq/p7/K1R4b

#2

8 + 11

3748 FIDE Album (1983-1985) 1992

SOLUTION

  • SOUND
  • Sets
    • 1...Rc8
      • 2.Rxc8#
    • 1...Rd8
      • 2.Qe5#
    • 1...Bxe3
      • 2.Rf8#
      • 2.Qf8#
    • 1...Bf4
      • 2.Rf8#
      • 2.Qf8#
    • 1...Bg5
      • 2.Rf8#
      • 2.Qf8#
    • 1...Bf8
      • 2.Rxf8#
      • 2.Qxf8#
  • Tries
    • 1.Sbc5?
      • threat
        • 2.Qxd7#
      • 1...Kd8
        • 2.Qxd7#
      • 1...0-0-0
        • 2.Sb3#
      • 1...Rd8
        • 2.Qe5#
      • 1...Rd3!
    • 1.Sec5?
      • threat
        • 2.Qxd7#
      • 1...Kd8
        • 2.Qxd7#
      • 1...0-0-0
        • 2.Se4#
      • 1...Rd8
        • 2.Qe5#
      • 1...Bc6!
    • 1.Bc5?
      • threat
        • 2.Qe7#
      • 1...0-0-0
        • 2.Be3#
      • 1...Bf8
        • 2.Rxf8#
        • 2.Qxf8#
      • 1...Kd8!
    • 1.Bxh6?
      • threat
        • 2.Rf8#
        • 2.Qf8#
      • 1...Kd8
        • 2.Rf8#
        • 2.Qf8#
      • 1...Qf1
        • 2.Qf8#
      • 1...Qxh6!
    • 1.Rc7?
      • threat
        • 2.Qxd7#
      • 1...Kd8
        • 2.Qxd7#
      • 1...Rd8
        • 2.Qe5#
      • 1...Qf1+!
  • Keys
    • 1.Rd1!
      • threat
        • 2.Qxd7#
      • 1...Kd8
        • 2.Qxd7#
      • 1...0-0-0
        • 2.Rc1#
      • 1...Rd8
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(j);N_GUARD::R(B),XR(j)
    • R(j);SBLOCK::QAR(G)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAB1(G),XP(i)
      • Vars
        • K(k);P-FLIGHT,P_SPINP(i)::QAR1(G),XP(i)
        • K(k);0-0-0::R(B)+S(C)
        • R(j);SBLOCK::QAR(G)
      • Refutation
        • R(c);
    • Try
      • S(E);
      • Threat
        • QAB1(G),XP(i)
      • Vars
        • K(k);P-FLIGHT,P_SPINP(i)::QAR1(G),XP(i)
        • K(k);0-0-0::R(B)+S(E)
        • R(j);SBLOCK::QAR(G)
      • Refutation
        • B(a);
    • Try
      • B(D);
      • Threat
        • QAR1(G)
      • Vars
        • K(k);0-0-0,OGATEB::R(B)+B(D)
      • Refutation
        • K(k);P-FLIGHT,P_SPINP(i)
    • Try
      • B(D);XB(g)
      • Threat
        • DUALS(2)
      • Vars
        • Q(e);P_PINR(B)::QAR1(G)
      • Refutation
        • Q(e);XB(D)
    • Try
      • R(B);
      • Threat
        • QAB1(G),XP(i)
      • Vars
        • K(k);P-FLIGHT,P_SPINP(i)::QAR1(G),XP(i)
        • R(j);SBLOCK::QAR(G)
      • Refutation
        • Q(e);CHECK
  • Actual
    • R(B);
    • Threat
      • QAB1(G),XP(i)
    • Vars
      • K(k);P-FLIGHT,P_SPINP(i)::QAR1(G),XP(i)
      • K(k);0-0-0,OGATEB::R(B)
      • R(j);SBLOCK::QAR(G)
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