MESON Chess Problem Database

Problem Display
PID: 196896 (r1b5/b1PR1P1Q/1n1Pk3/2p1B3/p1p1NPK1/8/8/8 w - - 0 1)

Dobbs, Gilbert S

American Chess Bulletin, 1919

r1b5/b1PR1P1Q/1n1Pk3/2p1B3/p1p1NPK1/8/8/8

#2

9 + 8

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Sd5
      • 2.Qf5#
      • 2.f8S#
  • Tries
    • 1.Sc3?
      • threat
        • 2.Re7#
        • 2.Qf5#
        • 2.f8S#
      • 1...Bxd7
        • 2.Qf5#
        • 2.Qg6#
      • 1...Sxd7
        • 2.Qf5#
      • 1...Ba6
        • 2.Re7#
        • 2.Qf5#
      • 1...Bb7
        • 2.Re7#
        • 2.Qf5#
      • 1...Sd5
        • 2.Qf5#
        • 2.f8S#
      • 1...Kxd7!
    • 1.Sg5+?
      • 1...Kd5
        • 2.Qe4#
        • 2.Qh1#
      • 1...Kxd7!
    • 1.Qg8?
      • threat
        • 2.f8S#
      • 1...Kxd7
        • 2.Qe8#
      • 1...Bxd7
        • 2.f8Q#
        • 2.f8S#
        • 2.f8B#
        • 2.f8R#
      • 1...Sxd7
        • 2.f8Q#
        • 2.f8S#
        • 2.f8B#
        • 2.f8R#
      • 1...Kd5!
    • 1.f8Q?
      • threat
        • 2.Qhf7#
        • 2.Qff7#
        • 2.Qfg8#
      • 1...Bxd7
        • 2.Qhg8#
        • 2.Qhf7#
        • 2.Qff7#
      • 1...Ba6
        • 2.Qhf7#
        • 2.Qff7#
      • 1...Bb7
        • 2.Qhf7#
        • 2.Qff7#
      • 1...Kd5!
    • 1.f8B?
      • threat
        • 2.Qf7#
      • 1...Bxd7
        • 2.Qg8#
      • 1...Sxd7
        • 2.Qg8#
      • 1...Kd5!
  • Keys
    • 1.Qh1!
      • threat
        • 2.Sxc5#
      • 1...Kd5
        • 2.Sg5#
      • 1...Kxd7
        • 2.Sxc5#
      • 1...Bxd7
        • 2.Sg5#
      • 1...Sxd7
        • 2.Sg5#
      • 1...Sd5
        • 2.f8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(A);
      • Threat
        • DUALS(3)
      • Vars
        • S(d);SBLOCK,XR(G)::QAB1(I)
      • Refutation
        • K(e);S_FLIGHT,XR(G)
    • Try
      • S(A);CHECK
      • Refutation
        • K(e);S_FLIGHT,XR(G)
    • Try
      • Q(I);
      • Threat
        • P=S
      • Vars
        • K(e);S_FLIGHT,XR(G)::QAB1(I)
      • Refutation
        • K(e);P_PINR(G),S_FLIGHT
    • Try
      • P(H);
      • Threat
        • DUALS(3)
      • Refutation
        • K(e);P_PINR(G),S_FLIGHT
    • Try
      • P(H);
      • Threat
        • QAB1(I)
      • Vars
        • B(h);SBLOCK,XR(G)::QAB(I)
        • S(d);SBLOCK,XR(G)::QAB(I)
      • Refutation
        • K(e);P_PINR(G),S_FLIGHT
  • Actual
    • Q(I);
    • Threat
      • S(A),XP(c)
    • Vars
      • K(e);P_PINR(G),S_FLIGHT::QAB(I)+S(A)
      • K(e);S_FLIGHT,XR(G)::S(A),XP(c)
      • B(h);SBLOCK,XR(G)::S(A)
      • S(d);SBLOCK,XR(G)::S(A)
      • S(d);SBLOCK::P=S
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