MESON Chess Problem Database

Problem Display
PID: 193755 (8/6K1/8/5kp1/1pQ5/R4Npn/rB2P1P1/5r1b w - - 0 1)

Guidelli, Giorgio

Good Companions (December), 1916

8/6K1/8/5kp1/1pQ5/R4Npn/rB2P1P1/5r1b

#2

7 + 8

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb2
      • 2.Ra5#
  • Tries
    • 1.Qe6+?
      • 1...Kf4
        • 2.e3#
      • 1...Kxe6!
    • 1.Qf7+?
      • 1...Ke4
        • 2.Sd2#
      • 1...Kg4!
    • 1.gxh3?
      • threat
        • 2.Qg4#
      • 1...g4
        • 2.Qxg4#
        • 2.hxg4#
      • 1...Bxf3!
  • Keys
    • 1.Sh2!
      • threat
        • 2.Qg4#
      • 1...Rxb2
        • 2.Ra5#
      • 1...gxh2
        • 2.g4#
      • 1...g4
        • 2.Qxg4#
      • 1...Rf4
        • 2.Qd5#
      • 1...Sf2
        • 2.Rf3#
      • 1...Sf4
        • 2.e4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(c);N_GUARD,XB(A)::R(D)
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • K(g);P-FLIGHT::P(B)
      • Refutation
        • K(g);S_FLIGHT,XQ(F)
    • Try
      • Q(F);CHECK
      • Vars
        • K(g);S_FLIGHT::S(E)
      • Refutation
        • K(g);S_FLIGHT
    • Try
      • P(C);XS(e)
      • Threat
        • QAB1(F)
      • Refutation
        • B(b);XS(E)
  • Actual
    • S(E);
    • Threat
      • QAB1(F)
    • Vars
      • R(c);N_GUARD,XB(A)::R(D)
      • P(d);OGATE,XS(E)::P(C)
      • P(h);::QAB1(F),XP(h)
      • R(a);SBLOCK::QAR2(F)
      • S(e);N_GUARD,S_CUTR(a)::R(D)
      • S(e);SBLOCK::P(B)
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