MESON Chess Problem Database

Problem Display
PID: 56454 (8/1B3R2/3p4/3n2r1/4kB2/1r4p1/3Q1nK1/8 w - - 0 1)

Brogi, Giuseppe

2nd Prize, Good Companions (Meredith Ty.), 1921

8/1B3R2/3p4/3n2r1/4kB2/1r4p1/3Q1nK1/8

#2

5 + 7

1597 La Theorie des Effets 1973

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Qe3#
    • 1...Rb2
      • 2.Qe3#
    • 1...Re3
      • 2.Qxe3#
    • 1...Rb4
      • 2.Qe3#
    • 1...Rb5
      • 2.Qe3#
    • 1...Rb6
      • 2.Qe3#
    • 1...Rg4
      • 2.Bxd5#
      • 2.Qxd5#
    • 1...Rg6
      • 2.Bxd5#
      • 2.Qxd5#
    • 1...Rg7
      • 2.Bxd5#
      • 2.Qxd5#
    • 1...Rg8
      • 2.Bxd5#
      • 2.Qxd5#
    • 1...Sd3
      • 2.Qe3#
  • Tries
    • 1.Bxg5?
      • threat
        • 2.Qxd5#
      • 1...Ke5
        • 2.Qxd5#
      • 1...Rd3
        • 2.Qf4#
      • 1...Sd3
        • 2.Qe3#
      • 1...Rb5
        • 2.Qe3#
      • 1...Rxb7!
    • 1.Qc3?
      • threat
        • 2.Qc4#
      • 1...Rb4
        • 2.Qe3#
      • 1...Rxc3!
    • 1.Qe2+?
      • 1...Re3
        • 2.Qc4#
        • 2.Qxe3#
      • 1...Kd4!
  • Keys
    • 1.Be5!
      • threat
        • 2.Qd4#
      • 1...Kxe5
        • 2.Qxd5#
      • 1...Rxe5
        • 2.Rf4#
      • 1...dxe5
        • 2.Bxd5#
      • 1...Rd3
        • 2.Qf4#
      • 1...Rb4
        • 2.Qe2#
      • 1...Sd3
        • 2.Qe2#

This is a version

Version by Pierre Bansac.

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • R(b);N_GUARD::QAR1(A)
    • R(b);N_GUARD::QAR1(A),XR(b)
    • S(a);S_CUTR(b)::QAR1(A)
  • Tries
    • Try
      • B(C);XR(f)
      • Threat
        • QAB1(A),XS(e)
      • Vars
        • K(d);N_SPINS(e),P-FLIGHT::QAR1(A),XS(e)
        • R(b);SBLOCK::QAR1(A)
        • S(a);S_CUTR(b)::QAR1(A)
        • R(b);N_GUARD::QAR1(A)
      • Refutation
        • R(b);N_SPINS(e),XB(D)
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • R(b);N_GUARD::QAR1(A)
      • Refutation
        • R(b);XQ(A)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(d);N_SPINS(e),P-FLIGHT
  • Actual
    • B(C);
    • Threat
      • QAR1(A)
    • Vars
      • K(d);N_SPINS(e),P-FLIGHT,XB(C)::QAR1(A),XS(e)
      • R(f);SBLOCK,XB(C)::R1(E)
      • P(g);SBLOCK,XB(C)::B(D),XS(e)
      • R(b);SBLOCK::QAR1(A)
      • R(b);N_GUARD::QAR2(A)
      • S(a);S_CUTR(b)::QAR2(A)
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