MESON Chess Problem Database

Problem Display
PID: 99563 (B4n2/1R4N1/p1n2bp1/3kP2p/3P4/4P1RQ/1Np3K1/8 w - - 0 1)

Kiss, Janos

Budapesti Sakkszovetseg TT, 1964

B4n2/1R4N1/p1n2bp1/3kP2p/3P4/4P1RQ/1Np3K1/8

#2

10 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sb4
      • 2.Rxb4#
      • 2.Rb5#
      • 2.Rd7#
    • 1...Sxd4
      • 2.Rb5#
    • 1...Sa5
      • 2.Rb5#
      • 2.Rd7#
    • 1...Sxe5
      • 2.Rd7#
    • 1...Sa7
      • 2.Rb5#
      • 2.Rxa7#
      • 2.Rd7#
    • 1...Se7
      • 2.Rb5#
      • 2.Rd7#
      • 2.Rxe7#
    • 1...Sb8
      • 2.Rb5#
      • 2.Rd7#
      • 2.Rxb8#
    • 1...Sd8
      • 2.Rb5#
      • 2.Rd7#
  • Tries
    • 1.Rb5+?
      • 1...Ke4
        • 2.Bxc6#
      • 1...axb5!
    • 1.Rd7+?
      • 1...Ke4
        • 2.Bxc6#
      • 1...Sxd7!
    • 1.Qe6+?
      • 1...Ke4
        • 2.Qxc6#
      • 1...Sxe6!
    • 1.Qd7+?
      • 1...Ke4
        • 2.Qxc6#
      • 1...Sxd7!
  • Keys
    • 1.Rxg6!
      • threat
        • 2.Qf3#
      • 1...Ke4
        • 2.Qf3#
      • 1...Sxd4
        • 2.Rb5#
      • 1...Sxe5
        • 2.Rd7#

This is a version

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(e);XP(F)::B(J)+R(H),DCHECK
    • S(e);XP(G)::B(J)+R(H),DCHECK
  • Tries
    • Try
      • R(H);CHECK,P_PINS(e)
      • Vars
        • K(b);S_FLIGHT::B(J),XS(e)
      • Refutation
        • P(d);XR(H)
    • Try
      • R(H);CHECK,P_PINS(e)
      • Vars
        • K(b);S_FLIGHT::B(J),XS(e)
      • Refutation
        • S(h);XR(H)
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB(E),XS(e)
      • Refutation
        • S(h);XQ(E)
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB(E),XS(e)
      • Refutation
        • S(h);XQ(E)
  • Actual
    • R(D);XP(g)
    • Threat
      • QAB(E)
    • Vars
      • K(b);S_FLIGHT::QAB1(E)
      • S(e);XP(F)::B(J)+R(H),DCHECK
      • S(e);XP(G)::B(J)+R(H),DCHECK
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