MESON Chess Problem Database

Problem Display
PID: 36231 (8/5p2/4pn2/4p3/2B1k2N/R2pP3/2bK4/rQ6 w - - 0 1)

Vladimirov, Viacheslav Semenovich

1st Prize, Source?, 1965

8/5p2/4pn2/4p3/2B1k2N/R2pP3/2bK4/rQ6

#2

6 + 8

3772 FIDE Album (1965-1967) 1976

SOLUTION

  • SOUND
  • Sets
    • 1...Ra2
      • 2.Qh1#
    • 1...Rxa3
      • 2.Qh1#
    • 1...Bd1
      • 2.Qxd3#
    • 1...Bb3
      • 2.Qxd3#
    • 1...Ba4
      • 2.Qxd3#
    • 1...Sg4
      • 2.Qb7#
    • 1...Sh5
      • 2.Qb7#
    • 1...Sd7
      • 2.Qb7#
    • 1...Sh7
      • 2.Qb7#
    • 1...Se8
      • 2.Qb7#
    • 1...Sg8
      • 2.Qb7#
  • Tries
    • 1.Bxd3+?
      • 1...Bxd3
        • 2.Qxd3#
      • 1...Kd5!
    • 1.Rxa1?
      • threat
        • 2.Qh1#
      • 1...Bd1
        • 2.Qxd3#
      • 1...Bxb1!
    • 1.Qb4?
      • threat
        • 2.Ba2#
        • 2.Bb3#
        • 2.Bxe6#
      • 1...Rb1
        • 2.Bb3#
      • 1...Ra2
        • 2.Bxa2#
        • 2.Bb3#
        • 2.Bxe6#
      • 1...Bb3
        • 2.Bxb3#
      • 1...Sd5
        • 2.Bxd3#
      • 1...Rd1+!
  • Keys
    • 1.Ra4!
      • 1...Rxb1
        • 2.Bb3#
      • 1...Rxa4
        • 2.Qh1#
      • 1...Bxb1
        • 2.Ba2#
      • 1...Bxa4
        • 2.Qxd3#
      • 1...Ra2
        • 2.Qh1#
      • 1...Ra3
        • 2.Qh1#
      • 1...Bd1
        • 2.Qxd3#
      • 1...Bb3
        • 2.Qxd3#
      • 1...Sg4
        • 2.Qb7#
      • 1...Sd5
        • 2.Bxd3#
      • 1...Sh5
        • 2.Qb7#
      • 1...Sd7
        • 2.Qb7#
      • 1...Sh7
        • 2.Qb7#
      • 1...Se8
        • 2.Qb7#
      • 1...Sg8
        • 2.Qb7#

There are these versions: 7364

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(a);N_GUARD::QAB(A)
    • R(a);N_GUARD,XR(C)::QAB(A)
    • B(b);OGATE,P_SPINP(c)::QAB1(A),XP(c)
    • S(g);N_GUARD::QAB(A)
  • Tries
    • Try
      • B(E);CHECK,XP(c)
      • Vars
        • B(b);OGATE,P_SPINB(b),XB(E)::QAB1(A),XB(b)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • R(C);XR(a)
      • Threat
        • QAB(A)
      • Vars
        • B(b);OGATE,P_SPINP(c)::QAB1(A),XP(c)
      • Refutation
        • B(b);XQ(A)
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Vars
        • R(a);::QAR(A)+B(E)
        • B(b);::QAR(A)+B(E),XB(b)
        • S(g);SBLOCK::QAR(A)+B(E),DCHECK,XP(c)
      • Refutation
        • R(a);CHECK
  • Actual
    • R(C);
    • Vars
      • R(a);N_GUARD,XQ(A)::R(C)+B(E)
      • R(a);N_GUARD,XR(C)::QAB(A)
      • B(b);N_GUARD,XQ(A)::R(C)+B(E)
      • B(b);OGATE,P_SPINP(c),XR(C)::QAB1(A),XP(c)
      • R(a);N_GUARD::QAB(A)
      • B(b);OGATE,P_SPINP(c)::QAB1(A),XP(c)
      • S(g);N_GUARD::QAB(A)
      • S(g);SBLOCK::R(C)+B(E),DCHECK,XP(c)
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