MESON Chess Problem Database

Problem Display
PID: 120002 (8/8/7B/4Kp2/b1BQ4/8/r2P2p1/4k2r w - - 0 1)

Kubbel, Arvid Ivanovich

Schweizerische Schachzeitung, 1906

8/8/7B/4Kp2/b1BQ4/8/r2P2p1/4k2r

#2

5 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rg1
      • 2.Qxg1#
    • 1...Rh2
      • 2.Qg1#
    • 1...Rh3
      • 2.Qg1#
    • 1...Rh4
      • 2.Qg1#
    • 1...Rh5
      • 2.Qg1#
    • 1...Rxd2
      • 2.Qxd2#
  • Tries
    • 1.Qe4+?
      • 1...Kd1
        • 2.Qb1#
      • 1...Kf2
        • 2.Qe3#
      • 1...fxe4!
  • Keys
    • 1.Qd3!
      • threat
        • 2.Qe2#
      • 1...Kd1
        • 2.Qb1#
      • 1...Kf2
        • 2.Qe3#
      • 1...Rxd2
        • 2.Qxd2#
      • 1...g1S
        • 2.Qf1#
      • 1...Bd1
        • 2.Qg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • R(b);N_GUARD::QAR2(C),XR(b)
    • R(b);N_GUARD::QAR2(C)
    • R(c);OGATE,XP(A)::QAB1(C),XR(c)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
        • K(a);S_FLIGHT::QAB1(C)
      • Refutation
        • P(f);XQ(C)
  • Actual
    • Q(C);
    • Threat
      • QAR1(C)
    • Vars
      • K(a);P-FLIGHT::QAR2(C)
      • K(a);S_FLIGHT::QAB1(C)
      • R(c);OGATE,XP(A)::QAB1(C),XR(c)
      • P(d);N_GUARD,S_CUTR(b)::QAR1(C)
      • B(e);SBLOCK::QAB(C)
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