MESON Chess Problem Database

Problem Display
PID: 7021 (2b3B1/3p4/p1nBq3/6p1/7b/2KR4/k2PQ3/3R4 w - - 0 1)

Lindner, Laszlo

Seneca, Camil

1st Prize, Schackvarlden, 1935

2b3B1/3p4/p1nBq3/6p1/7b/2KR4/k2PQ3/3R4

#2

7 + 8

3098 FIDE Album (1914-1944) (I) 1971
4080 Mattbilder eines Lebens 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Qb3+
      • 2.Bxb3#
    • 1...Qc4+
      • 2.Bxc4#
    • 1...Qd5
      • 2.Bxd5#
    • 1...Qf7
      • 2.Bxf7#
  • Tries
    • 1.Qf1?
      • threat
        • 2.Ra1#
      • 1...Qb3+
        • 2.Bxb3#
      • 1...Qc4+
        • 2.Bxc4#
      • 1...Be1!
    • 1.Qe1?
      • threat
        • 2.Ra1#
      • 1...Qb3+
        • 2.Bxb3#
      • 1...Qc4+
        • 2.Bxc4#
      • 1...Bxe1!
  • Keys
    • 1.Rd5!
      • threat
        • 2.Qc4#
      • 1...Qh3+
        • 2.d3#
      • 1...Qe3+
        • 2.dxe3#
      • 1...Qe5+
        • 2.Rxe5#
      • 1...Qf6+
        • 2.d4#
      • 1...Qxd5
        • 2.Bxd5#
        • 2.d3#
        • 2.d4#
      • 1...Qxe2
        • 2.Ra5#
      • 1...Qxd6
        • 2.Ra5#
      • 1...Sb4
        • 2.Ra5#
      • 1...Qg4
        • 2.Ra5#
      • 1...Qe4
        • 2.Ra5#
      • 1...Sd4
        • 2.Ra5#
      • 1...Sa5
        • 2.Rxa5#
      • 1...Se5
        • 2.Ra5#
        • 2.d3#
        • 2.d4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 4
  • Sets
    • Q(f);CHECK,OGATE::B(G),XQ(f)
    • Q(f);OGATE::B(G),XQ(f)
    • Q(f);OGATEB::B(G),XQ(f)
  • Tries
    • Try
      • Q(C);
      • Threat
        • R1(A)
      • Vars
        • Q(f);CHECK,OGATE::B(G),XQ(f)
      • Refutation
        • B(b);P_PINP(B)
    • Try
      • Q(C);
      • Threat
        • R1(A)
      • Vars
        • Q(f);CHECK,OGATE::B(G),XQ(f)
      • Refutation
        • B(b);P_PINP(B),XQ(C)
  • Actual
    • R(E);N_PINQ(f)
    • Threat
      • QAB(C)
    • Vars
      • Q(f);CHECK,N_GUARD::QAR(C)+P(B)
      • Q(f);CHECK,OGATE::QAR(C)+P(B),XQ(f)
      • Q(f);CHECK,OGATEB::B(G)+R(E),XQ(f)
      • Q(f);XQ(C)::B(G)+R(E),DCHECK
      • Q(f);XB(F)::B(G)+R(E),DCHECK
      • S(e);N_GUARD::R(E)
      • Q(f);::B(G)+R(E),DCHECK
      • S(e);N_GUARD::R(E),XS(e)
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