MESON Chess Problem Database

Problem Display
PID: 184915 (3R4/PNK3B1/B3P3/nN1P1p2/2k1rpb1/PnP1pQ2/2P2q2/1r6 w - - 0 1)

Kubbel, Leonid Ivanovich (AKA Kubbel, Karl Artur Leonid)

2nd HM., Bulletin Ouvrier des Echecs, 1937-1938

3R4/PNK3B1/B3P3/nN1P1p2/2k1rpb1/PnP1pQ2/2P2q2/1r6

#2

13 + 10

15601 Albrecht-Leiss-Degener Collection 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe6
      • 2.S5d6#
    • 1...Sc5
      • 2.Sxa5#
    • 1...e2
      • 2.Sd4#
      • 2.Qd3#
  • Tries
    • 1.Sxa5+?
      • 1...Kc5
        • 2.Bf8#
      • 1...Sxa5!
    • 1.Qxe4+?
      • 1...Sd4
        • 2.Qd3#
        • 2.Qxd4#
      • 1...fxe4!
    • 1.a8S?
      • threat
        • 2.Sa7#
        • 2.Sb6#
      • 1...Qxc2
        • 2.Sa7#
      • 1...Rxe6
        • 2.S5d6#
      • 1...Rd4
        • 2.Sb6#
      • 1...Re5
        • 2.Sb6#
      • 1...Sa1
        • 2.Sb6#
      • 1...Sc1
        • 2.Sb6#
      • 1...Sd2
        • 2.Sb6#
      • 1...Sd4
        • 2.Sb6#
      • 1...Sc5
        • 2.Sxa5#
        • 2.Sb6#
      • 1...e2
        • 2.Sd4#
        • 2.Sa7#
        • 2.Qd3#
      • 1...Sxb7!
  • Keys
    • 1.Kb6!
      • threat
        • 2.Sc7#
      • 1...Rxe6+
        • 2.S5d6#
      • 1...e2+
        • 2.Sd4#
      • 1...Rd4
        • 2.S7d6#
      • 1...Re5
        • 2.S7d6#
      • 1...Sa1
        • 2.Sxa5#
      • 1...Sc1
        • 2.Sxa5#
      • 1...Sd2
        • 2.Sxa5#
      • 1...Sd4
        • 2.Sxa5#
      • 1...Sc5
        • 2.Sxa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • R(f);XP(H)::B(G)+S(E),DCHECK
    • S(c);N_GUARD,SBLOCK::S(J),XS(i)
  • Tries
    • Try
      • S(J);CHECK,XS(i)
      • Vars
        • K(e);P-FLIGHT::B(L)
      • Refutation
        • S(c);XS(J)
    • Try
      • Q(D);CHECK,XR(f)
      • Refutation
        • P(j);XQ(D)
    • Try
      • P(I);
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);XP(A)::B(G)+S(E)
        • R(f);XP(H)::B(G)+S(E),DCHECK
        • R(f);::S(I)
        • S(c);::S(I)
      • Refutation
        • S(i);XS(J)
  • Actual
    • K(K);S_FLIGHT
    • Threat
      • B(G)+S(E)
    • Vars
      • R(f);CHECK,XP(H)::B(G)+S(E),DCHECK
      • P(d);CHECK::B(G)+S(E)
      • R(f);::S(J)
      • S(c);N_GUARD,P_PINS(E)::S(J),XS(i)
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