MESON Chess Problem Database

Problem Display
PID: 22020 (4k2r/2p1p2p/2p1P2p/2K2P1P/2PR4/3P4/6Q1/8 w k - 0 1)

Hume, George

Good Companions (April), 1923

4k2r/2p1p2p/2p1P2p/2K2P1P/2PR4/3P4/6Q1/8

#2

8 + 7

16 Chess Amateur (The) 1923
3360 Simple Two-move Themes 1924
3348 Changing Fashions 1925
273 Mat Plus 1995

SOLUTION

  • SOUND
  • Sets
    • 1...Kf8
      • 2.Rd8#
    • 1...Rf8
      • 2.Qxc6#
    • 1...Rg8
      • 2.Qxg8#
  • Tries
    • 1.Kb4?
      • 1...Kf8
        • 2.Rd8#
      • 1...Rf8
        • 2.Qxc6#
      • 1...Rg8
        • 2.Qxg8#
      • 1...c5+!
    • 1.Kxc6?
      • 1...Kf8
        • 2.Rd8#
      • 1...Rg8
        • 2.Qxg8#
      • 1...Rf8!
    • 1.Rd7?
      • 1...Kf8
        • 2.Rd8#
      • 1...Rg8
        • 2.Qxg8#
      • 1...Rf8!
    • 1.Qg1?
      • 1...Kf8
        • 2.Rd8#
      • 1...Rg8
        • 2.Qxg8#
      • 1...Rf8!
    • 1.Qg3?
      • 1...Kf8
        • 2.Rd8#
      • 1...Rg8
        • 2.Qxg8#
      • 1...Rf8!
    • 1.Qg4?
      • 1...Kf8
        • 2.Rd8#
      • 1...Rg8
        • 2.Qxg8#
      • 1...Rf8!
    • 1.Qg6+?
      • 1...Kf8
        • 2.Rd8#
        • 2.Qf7#
      • 1...hxg6!
    • 1.Qg7?
      • threat
        • 2.Qxh8#
        • 2.Qf7#
      • 1...Rg8
        • 2.Qf7#
        • 2.Qxg8#
      • 1...Rf8!
    • 1.f6?
      • 1...Kf8
        • 2.Rd8#
      • 1...Rf8
        • 2.Qxc6#
      • 1...Rg8
        • 2.Qxg8#
      • 1...exf6!
  • Keys
    • 1.Qb2!
      • threat
        • 2.Qb8#
      • 1...Kf8
        • 2.Rd8#
      • 1...0-0
        • 2.Rg4#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • K(f);P-FLIGHT::R(D)
    • R(g);SBLOCK::QAB(A),XP(a)
    • R(g);N_GUARD::QAR2(A),XR(g)
  • Tries
    • Try
      • K(E);S_FLIGHT
      • Vars
        • K(f);P-FLIGHT::R(D)
        • R(g);SBLOCK::QAB(A),XP(a)
        • R(g);N_GUARD::QAR2(A),XR(g)
      • Refutation
        • P(a);CHECK
    • Try
      • K(E);P-FLIGHT,XP(a)
      • Vars
        • K(f);P-FLIGHT::R(D)
        • R(g);N_GUARD::QAR2(A),XR(g)
      • Refutation
        • R(g);
    • Try
      • R(D);
      • Vars
        • K(f);P-FLIGHT::R(D)
        • R(g);N_GUARD::QAR2(A),XR(g)
      • Refutation
        • R(g);
    • Try
      • Q(A);
      • Vars
        • K(f);P-FLIGHT::R(D)
        • R(g);N_GUARD::QAR2(A),XR(g)
      • Refutation
        • R(g);
    • Try
      • Q(A);
      • Vars
        • K(f);P-FLIGHT::R(D)
        • R(g);N_GUARD::QAR2(A),XR(g)
      • Refutation
        • R(g);
    • Try
      • Q(A);
      • Vars
        • K(f);P-FLIGHT::R(D)
        • R(g);N_GUARD::QAR2(A),XR(g)
      • Refutation
        • R(g);
    • Try
      • Q(A);CHECK
      • Refutation
        • P(e);XQ(A)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Refutation
        • R(g);
    • Try
      • P(F);
      • Vars
        • K(f);P-FLIGHT::R(D)
        • R(g);SBLOCK::QAB(A),XP(a)
        • R(g);N_GUARD::QAR2(A),XR(g)
      • Refutation
        • P(d);XP(F)
  • Actual
    • Q(A);
    • Threat
      • QAR(A)
    • Vars
      • K(f);P-FLIGHT::R(D)
      • K(f);0-0,OGATEB::R(D)
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