MESON Chess Problem Database

Problem Display
PID: 215844 (Q1n5/1n1b4/r3R3/8/1RB3p1/4P1K1/p1P5/k7 w - - 0 1)

Witt, Andreas

Badische Neueste Nachrichten, 1997

Q1n5/1n1b4/r3R3/8/1RB3p1/4P1K1/p1P5/k7

#2

7 + 7

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rb6
      • 2.Qxa2#
    • 1...Rc6
      • 2.Qxa2#
    • 1...Rd6
      • 2.Qxa2#
    • 1...Rxe6
      • 2.Qxa2#
    • 1...Sa5
      • 2.Qh1#
    • 1...Sc5
      • 2.Qh1#
    • 1...Sbd6
      • 2.Qh1#
    • 1...Sd8
      • 2.Qh1#
    • 1...Sb6
      • 2.Qh8#
    • 1...Scd6
      • 2.Qh8#
    • 1...Sa7
      • 2.Qh8#
    • 1...Se7
      • 2.Qh8#
  • Tries
    • 1.Rxa6?
      • threat
        • 2.Rxa2#
      • 1...Sa5
        • 2.Qh1#
      • 1...Ba4!
    • 1.Rf6?
      • threat
        • 2.Rf1#
      • 1...Rxf6
        • 2.Qxa2#
      • 1...Rd6
        • 2.Qxa2#
      • 1...Bf5!
    • 1.Rh6?
      • threat
        • 2.Rh1#
      • 1...Rxh6
        • 2.Qxa2#
      • 1...Rd6
        • 2.Qxa2#
      • 1...Rf6
        • 2.Qxa2#
      • 1...Bc6!
  • Keys
    • 1.Rd6!
      • threat
        • 2.Rd1#
      • 1...Rxd6
        • 2.Qxa2#
      • 1...Sbxd6
        • 2.Qh1#
      • 1...Scxd6
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 9
  • Sets
    • R(d);OGATE,P_SPINP(b)::QAR1(G),XP(b)
    • R(d);OGATE,P_SPINP(b),XR(F)::QAR1(G),XP(b)
    • S(e);OGATE::QAB1(G)
    • S(g);OGATE::QAB(G)
  • Tries
    • Try
      • R(F);P_PINP(b),XR(d)
      • Threat
        • R1(F),XP(b)
      • Vars
        • S(e);N_SPINP(b),OGATE::QAB1(G)
      • Refutation
        • B(f);N_SPINP(b)
    • Try
      • R(F);
      • Threat
        • R(F)
      • Vars
        • R(d);OGATE,P_SPINP(b),XR(F)::QAR1(G),XP(b)
        • R(d);OGATE,P_SPINP(b)::QAR1(G),XP(b)
      • Refutation
        • B(f);
    • Try
      • R(F);
      • Threat
        • R(F)
      • Vars
        • R(d);OGATE,P_SPINP(b),XR(F)::QAR1(G),XP(b)
        • R(d);OGATE,P_SPINP(b)::QAR1(G),XP(b)
      • Refutation
        • B(f);
  • Actual
    • R(F);
    • Threat
      • R(F)
    • Vars
      • R(d);OGATE,P_SPINP(b),XR(F)::QAR1(G),XP(b)
      • S(e);OGATE,XR(F)::QAB1(G)
      • S(g);OGATE,XR(F)::QAB(G)
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