MESON Chess Problem Database

Problem Display
PID: 204284 (7R/2qk3P/N1p2P2/r1p1pK2/2NbP3/3Q4/B7/8 w - - 0 1)

Trilling, Anton AC

Arbeiter Schachzeitung, 1925

7R/2qk3P/N1p2P2/r1p1pK2/2NbP3/3Q4/B7/8

#2

9 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qd6
      • 2.Sb6#
    • 1...Rxa2
      • 2.Sxc5#
    • 1...Ra3
      • 2.Sxc5#
    • 1...Ra4
      • 2.Sxc5#
  • Tries
    • 1.Kg5?
      • threat
        • 2.Qh3#
      • 1...Qd6
        • 2.Sb6#
      • 1...Ra3
        • 2.Sxc5#
      • 1...Ke6!
    • 1.Qg3?
      • threat
        • 2.Qg7#
      • 1...Qd6
        • 2.Sb6#
      • 1...Qd8!
    • 1.Qh3?
      • threat
        • 2.Kg5#
        • 2.Kg6#
      • 1...Qd6
        • 2.Sb6#
      • 1...Be3
        • 2.Kg6#
      • 1...Ra3!
  • Keys
    • 1.Kg6!
      • threat
        • 2.Qh3#
      • 1...Ke6
        • 2.Qh3#
      • 1...Qd6
        • 2.Sb6#
      • 1...Ra3
        • 2.Sxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • Q(f);N_GUARD,N_SPINB(a),SBLOCK::S(C)
    • R(b);N_GUARD,XB(A)::S(F),XP(c)
    • R(b);N_GUARD::S(F),XP(c)
  • Tries
    • Try
      • K(E);P-FLIGHT
      • Threat
        • QAB(B)
      • Vars
        • Q(f);N_GUARD,N_SPINB(a),SBLOCK::S(C)
        • R(b);N_GUARD::S(F),XP(c)
      • Refutation
        • K(g);N_SPINB(a),S_FLIGHT
    • Try
      • Q(B);N_PINB(a)
      • Threat
        • QAR(B)
      • Vars
        • Q(f);N_GUARD,SBLOCK::S(C)
      • Refutation
        • Q(f);
    • Try
      • Q(B);N_PINB(a)
      • Threat
        • DUALS(2)
      • Vars
        • Q(f);N_GUARD,SBLOCK::S(C)
        • B(a);::QAB(B)+K(E)
      • Refutation
        • R(b);
  • Actual
    • K(E);S_FLIGHT
    • Threat
      • QAB(B)
    • Vars
      • K(g);N_SPINB(a),S_FLIGHT::QAB(B)
      • Q(f);N_GUARD,N_SPINB(a),P_PINP(G),SBLOCK::S(C)
      • R(b);N_GUARD::S(F),XP(c)
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