MESON Chess Problem Database

Problem Display
PID: 243336 (7n/1K1p2P1/3k4/3PN3/8/1BR1n1P1/4R3/2b1Q1B1 w - - 0 1)

Apro, Laszlo

Skakbladet, 1937

7n/1K1p2P1/3k4/3PN3/8/1BR1n1P1/4R3/2b1Q1B1

#2

10 + 5

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Bc5#
    • 1...Sf1
      • 2.Bc5#
    • 1...Sc2
      • 2.Bc5#
    • 1...Sg2
      • 2.Bc5#
    • 1...Sg4
      • 2.Bc5#
    • 1...Sxd5
      • 2.Sc4#
    • 1...Sf5
      • 2.Bc5#
  • Tries
    • 1.Qf1?
      • threat
        • 2.Qf6#
      • 1...Kxe5
        • 2.Qf4#
      • 1...Ke7
        • 2.Qf8#
      • 1...Sxf1
        • 2.Bc5#
      • 1...Sxd5
        • 2.Sc4#
      • 1...Sg4
        • 2.Bc5#
        • 2.Qf8#
      • 1...Sf5
        • 2.Bc5#
      • 1...Sc4!
  • Keys
    • 1.Qf2!
      • threat
        • 2.Qf6#
      • 1...Kxe5
        • 2.Qf4#
      • 1...Ke7
        • 2.Qf8#
      • 1...Sxd5
        • 2.Sc4#
      • 1...Sc4
        • 2.Qc5#
      • 1...Sg4
        • 2.Qc5#
        • 2.Qf8#
      • 1...Sf5
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • S(b);OGATE::B(B)
    • S(b);N_GUARD,SBLOCK,XP(G)::S(H)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • K(c);OGATEB,P_SPINS(b),S_FLIGHT,XS(H)::QAB1(A)
        • K(c);S_FLIGHT::QAB1(A)
        • S(b);OGATE,XQ(A)::B(B)
        • S(b);N_GUARD,SBLOCK,XP(G)::S(H)
        • S(b);OGATE::B(B)
      • Refutation
        • S(b);
  • Actual
    • Q(A);
    • Threat
      • QAR2(A)
    • Vars
      • K(c);OGATEB,P_SPINS(b),S_FLIGHT,XS(H)::QAB1(A)
      • K(c);S_FLIGHT::QAB1(A)
      • S(b);N_GUARD,SBLOCK,XP(G)::S(H)
      • S(b);OGATE::QAB1(A)
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