MESON Chess Problem Database

Problem Display
PID: 101339 (8/8/2p1NK2/8/1Q1nkp2/3r1r2/B2pnp2/4Rb2 w - - 0 1)

Guidelli, Giorgio

Good Companions, 1918

8/8/2p1NK2/8/1Q1nkp2/3r1r2/B2pnp2/4Rb2

#2

5 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ra3
      • 2.Qxd4#
    • 1...Rb3
      • 2.Qxd4#
    • 1...Rc3
      • 2.Qxd4#
    • 1...Rde3
      • 2.Sc5#
    • 1...Rfe3
      • 2.Sg5#
  • Tries
    • 1.Rxe2+?
      • 1...Rde3
        • 2.Sc5#
        • 2.Qxd4#
      • 1...Rfe3
        • 2.Sg5#
      • 1...Bxe2!
  • Keys
    • 1.Qd6!
      • threat
        • 2.Qe5#
      • 1...Ke3
        • 2.Qe5#
      • 1...Ra3
        • 2.Qxd4#
      • 1...Rb3
        • 2.Qxd4#
      • 1...Rc3
        • 2.Qxd4#
      • 1...Rg3
        • 2.Qxf4#
      • 1...Rh3
        • 2.Qxf4#
      • 1...Rde3
        • 2.Sc5#
      • 1...Rfe3
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(e);N_GUARD::QAR1(C),XS(g)
    • R(e);N_SPINS(c),P_SPINS(g),SBLOCK::S(D)
    • R(f);N_SPINS(c),P_SPINS(g),SBLOCK::S(D)
  • Tries
    • Try
      • R(A);CHECK,P_PINS(g),XS(c)
      • Vars
        • R(f);P_SPINR(f)::S(D)
      • Refutation
        • B(a);XR(A)
  • Actual
    • Q(C);
    • Threat
      • QAR1(C)
    • Vars
      • K(h);P-FLIGHT::QAR2(C)
      • R(e);N_GUARD::QAR1(C),XS(g)
      • R(f);N_GUARD::QAR1(C),XP(i)
      • R(e);N_SPINS(c),SBLOCK::S(D)
      • R(f);N_SPINS(c),SBLOCK::S(D)
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Developed and maintained by Brian Stephenson.
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