MESON Chess Problem Database

Problem Display
PID: 56443 (1n6/8/p5r1/k1B2Rq1/B1P1r3/K1N5/1N1PpP2/4Q3 w - - 0 1)

Brogi, Giuseppe

L'Italia Scacchistica, 1919

1n6/8/p5r1/k1B2Rq1/B1P1r3/K1N5/1N1PpP2/4Q3

#2

10 + 7

5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc4
      • 2.Sxc4#
    • 1...Rb6
      • 2.Bb4#
  • Keys
    • 1.Sd5!
      • threat
        • 2.Bb4#
      • 1...Qe3+
        • 2.dxe3#
      • 1...Qg3+
        • 2.d3#
      • 1...Re3+
        • 2.dxe3#
        • 2.d3#
      • 1...Qxd2
        • 2.Qxd2#
      • 1...Rxc4
        • 2.Sxc4#
      • 1...Qe7
        • 2.d3#
        • 2.d4#
      • 1...Rb6
        • 2.Bxb6#
      • 1...Sc6
        • 2.Bb6#

This anticipates 196966(1919)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(b);XP(H)::S(B),XR(b)
    • R(f);SBLOCK::R(J)+B(I),DCHECK
  • Actual
    • S(F);
    • Threat
      • B(I)
    • Vars
      • Q(d);CHECK,OGATE::QAB(A)+P(C),XQ(d)
      • Q(d);CHECK,N_GUARD::QAB(A)+P(C)
      • Q(d);OGATE,P_SPINQ(d),XP(C)::QAB(A),XQ(d)
      • R(b);XP(H)::S(B),XR(b)
      • R(f);N_GUARD::B(I),XR(f)
      • S(g);S_CUTR(f)::B(I)
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