MESON Chess Problem Database

Problem Display
PID: 190222 (6N1/2N1p1nn/1Q1b2p1/4k3/3rP3/3p4/3B3K/4R3 w - - 0 1)

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

Deutsche Schachzeitung, 1913

6N1/2N1p1nn/1Q1b2p1/4k3/3rP3/3p4/3B3K/4R3

#2

7 + 8

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Qa5+?
      • 1...Rd5
        • 2.Qxd5#
      • 1...Bc5!
    • 1.Qc5+?
      • 1...Rd5
        • 2.Qxd5#
      • 1...Bxc5!
    • 1.Qb5+?
      • 1...Rd5
        • 2.Qxd5#
      • 1...Bc5!
  • Keys
    • 1.Sh6!
      • threat
        • 2.Sg4#
      • 1...Kf6+
        • 2.e5#
      • 1...Rxe4
        • 2.Qb2#
      • 1...Sf6
        • 2.Sf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAR1(E),XR(b)
      • Refutation
        • B(d);P_SPINB(d)
    • Try
      • Q(E);CHECK
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAR1(E),XR(b)
      • Refutation
        • B(d);XQ(E)
    • Try
      • Q(E);CHECK
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAR1(E),XR(b)
      • Refutation
        • B(d);P_SPINB(d)
  • Actual
    • S(G);
    • Threat
      • S(G)
    • Vars
      • K(c);CHECK,OGATE,P_SPINB(d),S_FLIGHT::P(D)
      • R(b);OGATEB,P_SPINR(b),XP(D)::QAB(E)
      • S(h);SBLOCK::S(G)
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