MESON Chess Problem Database

Problem Display
PID: 176084 (4N3/2q5/5QR1/PPkn3R/Pp6/6b1/b3BN2/4K3 w - - 0 1)

Trilling, Anton AC

Schach-Echo, 1938

4N3/2q5/5QR1/PPkn3R/Pp6/6b1/b3BN2/4K3

#2

10 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qf4
      • 2.Qb6#
    • 1...Qb6
      • 2.Qxb6#
    • 1...Qd7
      • 2.Qb6#
    • 1...Qe7
      • 2.Qb6#
    • 1...Qf7
      • 2.Qb6#
    • 1...Qg7
      • 2.Qb6#
    • 1...Qh7
      • 2.Qb6#
    • 1...Qc8
      • 2.Qb6#
    • 1...Bxf2+
      • 2.Qxf2#
    • 1...Bh2
      • 2.Se4#
    • 1...Bf4
      • 2.Se4#
    • 1...Bd6
      • 2.Se4#
    • 1...b3
      • 2.Qc3#
  • Tries
    • 1.Sxc7?
      • threat
        • 2.Sa6#
        • 2.Qb6#
      • 1...Bxf2+
        • 2.Qxf2#
      • 1...Bxc7
        • 2.Se4#
      • 1...b3
        • 2.Sa6#
        • 2.Qc3#
      • 1...Bd6
        • 2.Se4#
        • 2.Sa6#
        • 2.Se6#
      • 1...Be5!
    • 1.Qc3+?
      • 1...Bc4
        • 2.Qe3#
        • 2.Qxc4#
      • 1...bxc3!
  • Keys
    • 1.Rg4!
      • threat
        • 2.Qd4#
      • 1...Bxf2+
        • 2.Qxf2#
      • 1...Qf4
        • 2.Qb6#
      • 1...Qe5
        • 2.Qc6#
      • 1...Qg7
        • 2.Qb6#
        • 2.Qc6#
      • 1...Bf4
        • 2.Se4#
      • 1...Be5
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 10
  • Sets
    • Q(f);N_GUARD::QAB1(H)
    • Q(f);N_GUARD::QAB1(H),XQ(f)
    • Q(f);N_GUARD,P_PINB(B)::QAB1(H)
    • B(b);CHECK,OGATE,XS(C)::QAB(H),XB(b)
    • B(b);N_PINS(C)::S(C)
    • P(c);N_GUARD,S_CUTB(a)::QAR2(H)
  • Tries
    • Try
      • S(J);XQ(f)
      • Threat
        • DUALS(2)
      • Vars
        • B(b);CHECK,OGATE,XS(C)::QAB(H),XB(b)
        • B(b);N_PINS(C),XS(J)::S(C)
      • Refutation
        • B(b);N_PINS(C),N_SPINS(e)
    • Try
      • Q(H);CHECK
      • Refutation
        • P(c);XQ(H)
  • Actual
    • R(I);
    • Threat
      • QAB1(H)
    • Vars
      • B(b);CHECK,OGATE,XS(C)::QAB(H),XB(b)
      • Q(f);N_GUARD::QAB1(H)
      • Q(f);N_GUARD,N_SPINS(e),P_PINB(B)::QAR1(H)
      • B(b);N_PINS(C)::S(C)
      • B(b);N_PINS(C),N_SPINS(e)::S(C)
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