MESON Chess Problem Database

Problem Display
PID: 232453 (1B2bN2/2p1K3/3N4/2p1k1pp/5p2/3R1R1n/2p2r2/2b3Q1 w - - 0 1)

Dietrich, Albert

Freie Presse, 1984

1B2bN2/2p1K3/3N4/2p1k1pp/5p2/3R1R1n/2p2r2/2b3Q1

#2

7 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rf1
      • 2.Qxc5#
    • 1...Rd2
      • 2.Qxc5#
    • 1...Re2
      • 2.Qxc5#
    • 1...Rg2
      • 2.Qxc5#
    • 1...Rh2
      • 2.Qxc5#
    • 1...Rxf3
      • 2.Qxc5#
    • 1...Ba4
      • 2.Sg6#
    • 1...Bb5
      • 2.Sg6#
    • 1...Bc6
      • 2.Sg6#
    • 1...Bg6
      • 2.Sxg6#
      • 2.Sd7#
    • 1...Bd7
      • 2.Sg6#
      • 2.Sxd7#
    • 1...Bf7
      • 2.Sd7#
  • Tries
    • 1.Qe1+?
      • 1...Re2
        • 2.Qc3#
      • 1...Be3!
    • 1.Qg4?
      • threat
        • 2.Qf5#
        • 2.Qe6#
      • 1...cxd6
        • 2.Qe6#
      • 1...Bg6
        • 2.Sxg6#
        • 2.Sd7#
        • 2.Qe6#
      • 1...Bd7
        • 2.Sg6#
        • 2.Sxd7#
      • 1...Bf7
        • 2.Sd7#
        • 2.Qf5#
      • 1...hxg4!
  • Keys
    • 1.Rxf4!
      • threat
        • 2.Re4#
      • 1...Kxf4
        • 2.Qg3#
      • 1...Rxf4
        • 2.Qxc5#
      • 1...Bxf4
        • 2.Qa1#
      • 1...Sxf4
        • 2.Qxg5#
      • 1...gxf4
        • 2.Qg7#
      • 1...cxd6
        • 2.Bxd6#
      • 1...Re2
        • 2.Rf5#
      • 1...Bc6
        • 2.Sg6#
      • 1...Bg6
        • 2.Sxg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 7
    • REMOVED MATES = 8
  • Sets
    • R(c);OGATE::QAR2(A),XP(f)
    • R(c);OGATE,XR(C)::QAR2(A),XP(f)
    • B(k);N_GUARD::S(G)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • R(c);P_SPINR(c)::QAB(A)
      • Refutation
        • B(a);P_SPINB(a)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(j);P_SPINP(j),XS(D)::QAR1(A)
      • Refutation
        • P(i);XQ(A)
  • Actual
    • R(C);XP(e)
    • Threat
      • R1(C)
    • Vars
      • K(g);OGATEB,S_FLIGHT,XR(C)::QAB1(A)
      • R(c);OGATE,SBLOCK,XR(C)::QAR2(A),XP(f)
      • B(a);OGATE,SBLOCK,XR(C)::QAB(A)
      • S(d);N_GUARD,XR(C)::QAR2(A),XP(h)
      • P(h);OGATE,SBLOCK,XR(C)::QAB(A)
      • P(j);OGATE,P_SPINP(j),XS(D)::B(F),XP(j)
      • R(c);N_GUARD::R1(C)
      • B(k);N_GUARD::S(G)
      • B(k);N_GUARD::S(G),XB(k)
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