MESON Chess Problem Database

Problem Display
PID: 261375 (Q7/K3N1pB/4ppr1/1P6/3k3r/1PpN2R1/2p1n3/n2bR3 w - - 0 1)

Bruch, Wieland

Neue Zurcher Zeitung, 1992

Q7/K3N1pB/4ppr1/1P6/3k3r/1PpN2R1/2p1n3/n2bR3

#2

9 + 11

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Qd8#
    • 1...Rg4
      • 2.Qd8#
    • 1...Rh6
      • 2.Qd8#
    • 1...Sc1
      • 2.Qd8#
    • 1...Sg1
      • 2.Qd8#
    • 1...Sxg3
      • 2.Qd8#
    • 1...Sf4
      • 2.Re4#
      • 2.Qe4#
    • 1...e5
      • 2.Sf5#
      • 2.Qd5#
  • Tries
    • 1.Kb6?
      • threat
        • 2.Qa4#
      • 1...Sxg3
        • 2.Qd8#
      • 1...Rxg3!
    • 1.Kb8?
      • threat
        • 2.Qa4#
      • 1...Rxg3
        • 2.Qa7#
      • 1...Sxg3!
    • 1.Qc6?
      • threat
        • 2.Qc4#
      • 1...Rxg3
        • 2.Qc5#
        • 2.Qb6#
      • 1...Sxb3!
    • 1.Qc8?
      • threat
        • 2.Qc4#
      • 1...Ke4
        • 2.Qc4#
      • 1...Rxg3
        • 2.Qc5#
      • 1...Sxb3!
  • Keys
    • 1.Kb7!
      • threat
        • 2.Qa4#
      • 1...Ke4
        • 2.Qa4#
      • 1...Rxg3
        • 2.Qa7#
      • 1...Sxg3
        • 2.Qd8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • R(g);SBLOCK::QAR(I)
    • R(j);::QAR(I)
    • S(d);::QAR(I)
    • S(d);XR(D)::QAR(I)
  • Tries
    • Try
      • K(F);S_FLIGHT
      • Threat
        • QAR(I)
      • Vars
        • S(d);XR(D)::QAR(I)
      • Refutation
        • R(j);XR(D)
    • Try
      • K(F);S_FLIGHT
      • Threat
        • QAR(I)
      • Vars
        • R(j);XR(D)::QAB(I)
      • Refutation
        • S(d);XR(D)
    • Try
      • Q(I);
      • Threat
        • QAR1(I)
      • Refutation
        • S(a);XP(B)
    • Try
      • Q(I);
      • Threat
        • QAR1(I)
      • Vars
        • K(f);P-FLIGHT,P_SPINR(j),P_SPINS(d)::QAR2(I)
        • R(j);XR(D)::QAB1(I)
      • Refutation
        • S(a);XP(B)
  • Actual
    • K(F);P-FLIGHT
    • Threat
      • QAR(I)
    • Vars
      • K(f);P-FLIGHT,P_SPINR(j),P_SPINS(d)::QAR(I)
      • R(j);XR(D)::QAB(I)
      • S(d);XR(D)::QAR(I)
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