MESON Chess Problem Database

Problem Display
PID: 85097 (3R4/K1PQ4/4pp2/2PN1N2/pBkP4/qnp2R1r/1nP5/8 w - - 0 1)

Makaronets, Leonid

Gambit, 1998

3R4/K1PQ4/4pp2/2PN1N2/pBkP4/qnp2R1r/1nP5/8

#2

11 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxb4
      • 2.Sde3#
    • 1...Rh1
      • 2.Rxc3#
    • 1...Rh2
      • 2.Rxc3#
    • 1...Rh4
      • 2.Rxc3#
    • 1...Rh5
      • 2.Rxc3#
    • 1...Rh6
      • 2.Rxc3#
    • 1...Rh7
      • 2.Rxc3#
    • 1...Rh8
      • 2.Rxc3#
    • 1...Sd3
      • 2.cxd3#
    • 1...Sxd4
      • 2.Sfe3#
  • Tries
    • 1.Bxa3?
      • threat
        • 2.Sde3#
        • 2.Sb6#
      • 1...Rxf3
        • 2.Sb6#
      • 1...Sd1
        • 2.Sb6#
        • 2.Qxa4#
      • 1...exd5!
    • 1.Qxe6?
      • threat
        • 2.Qa6#
      • 1...Kb5
        • 2.Qa6#
      • 1...Qxb4
        • 2.Sxc3#
      • 1...Sxd4
        • 2.Sd6#
      • 1...Sxc5!
  • Keys
    • 1.Sxc3!
      • threat
        • 2.Qb5#
      • 1...Kxb4
        • 2.Qb5#
      • 1...Qxb4
        • 2.Qxe6#
      • 1...Sxd4
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 8
  • Sets
    • Q(b);SBLOCK,XB(C)::S(F)
    • R(e);N_GUARD::R1(B),XP(d)
    • S(a);OGATE::P(A),XS(a)
    • S(c);SBLOCK,XP(D)::S(G)
  • Tries
    • Try
      • B(C);XQ(b)
      • Threat
        • DUALS(2)
      • Vars
        • R(e);XR(B)::S(F)
      • Refutation
        • P(h);XS(F)
    • Try
      • Q(J);XP(h)
      • Threat
        • QAB(J)
      • Vars
        • K(g);S_FLIGHT::QAB1(J)
        • Q(b);SBLOCK,XB(C)::QAB(J)+S(F),XP(d)
        • S(c);SBLOCK,XP(D)::S(G)
      • Refutation
        • S(c);XP(E)
  • Actual
    • S(F);XP(d)
    • Threat
      • QAB1(J)
    • Vars
      • K(g);P-FLIGHT,XB(C)::QAR1(J)
      • Q(b);SBLOCK,XB(C)::QAB(J),XP(h)
      • S(c);OGATE,XP(D)::QAR1(J),XS(c)
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