MESON Chess Problem Database

Problem Display
PID: 45878 (8/2n1pKQP/n3P1N1/3p2N1/2qRP2p/2p1k3/2P1p1Bp/4B3 w - - 0 1)

Melnichenko, Viktor Oleksandrovich

Sushkov, Yuri Akimovich

6th Prize, 01. Tungsram Cup, 1978

8/2n1pKQP/n3P1N1/3p2N1/2qRP2p/2p1k3/2P1p1Bp/4B3

#2

11 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qa2
      • 2.Rd3#
    • 1...Qb3
      • 2.Rd3#
    • 1...Qd3
      • 2.Rxd3#
    • 1...Qa4
      • 2.Rd3#
    • 1...Qb4
      • 2.Rd3#
    • 1...Qc5
      • 2.Rd3#
    • 1...Qc6
      • 2.Rd3#
  • Tries
    • 1.Sf3?
      • threat
        • 2.Qh6#
      • 1...Qxd4
        • 2.Qxd4#
      • 1...Sxe6!
    • 1.Sh3?
      • threat
        • 2.Bf2#
      • 1...Qxd4
        • 2.Qh6#
      • 1...Qd3
        • 2.Rxd3#
      • 1...h1S!
    • 1.Rxc4?
      • threat
        • 2.Rxc3#
        • 2.Qxc3#
        • 2.Qd4#
      • 1...Sxe6
        • 2.Rxc3#
        • 2.Qxc3#
      • 1...dxc4
        • 2.Qxc3#
      • 1...Sb4
        • 2.Qd4#
      • 1...Sc5
        • 2.Qd4#
      • 1...d4
        • 2.Qxd4#
      • 1...Sb5!
    • 1.Qe5?
      • threat
        • 2.exd5#
      • 1...Qxd4
        • 2.Qf4#
      • 1...dxe4
        • 2.Qxe4#
      • 1...Qd3
        • 2.Rxd3#
      • 1...Sc5!
  • Keys
    • 1.Qh6!
      • threat
        • 2.Sf3#
      • 1...Kxd4
        • 2.Bf2#
      • 1...Qxd4
        • 2.Sh3#
      • 1...Sxe6
        • 2.Sxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • Q(e);N_GUARD::R1(D)
    • Q(e);N_GUARD::R1(D),XQ(e)
  • Tries
    • Try
      • S(F);
      • Threat
        • QAB(J)
      • Vars
        • Q(e);OGATE,XR(D)::QAB1(J),XQ(e)
      • Refutation
        • S(i);XP(G)
    • Try
      • S(F);
      • Threat
        • B(A)
      • Vars
        • Q(e);SBLOCK,XR(D)::QAB(J)
        • Q(e);N_GUARD::R1(D),XQ(e)
      • Refutation
        • P(b);
    • Try
      • R(D);XQ(e)
      • Threat
        • DUALS(3)
      • Vars
        • P(g);XR(D)::QAR2(J),XP(c)
        • S(h);::QAB1(J)
        • P(g);::QAB1(J),XP(g)
      • Refutation
        • S(i);
    • Try
      • Q(J);
      • Threat
        • QAR(J)+P(E),XP(g)
      • Vars
        • Q(e);SBLOCK,XR(D)::QAB1(J)
        • P(g);OGATE,P_PINP(G),P_SPINP(g),XP(E)::QAR1(J),XP(g)
        • Q(e);N_GUARD::R1(D),XQ(e)
      • Refutation
        • S(h);
  • Actual
    • Q(J);
    • Threat
      • QAB(J)+S(F)
    • Vars
      • K(d);S_FLIGHT,XR(D)::B(A)
      • Q(e);SBLOCK,XR(D)::QAB(J)+S(F)
      • S(i);XP(G)::QAB(J)+S(F),XS(i)
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