MESON Chess Problem Database

Problem Display
PID: 139990 (q2r1BB1/2r1nR1K/6P1/5R2/2k5/P1N5/1pQP1Np1/4n3 w - - 0 1)

Fleck, Ferenc

1st HM., BCPS 034. Ty., 1938

q2r1BB1/2r1nR1K/6P1/5R2/2k5/P1N5/1pQP1Np1/4n3

#2

11 + 8

56 The Problemist 1938

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Se2#
      • 2.Sb5#
    • 1...Qf3
      • 2.Qa4#
    • 1...Qe4
      • 2.Qa4#
    • 1...Qa4
      • 2.Qxa4#
    • 1...Qc8
      • 2.Qa4#
    • 1...Sd3
      • 2.Se2#
      • 2.Sb5#
    • 1...Sf3
      • 2.Se2#
      • 2.Sb5#
    • 1...Sc6
      • 2.Rd7#
  • Tries
    • 1.Sb1+?
      • 1...Kd4
        • 2.Bg7#
      • 1...Sxc2!
    • 1.Scd1+?
      • 1...Kd4
        • 2.Bg7#
      • 1...Sxc2!
    • 1.Sa2+?
      • 1...Kd4
        • 2.Bg7#
      • 1...Sxc2!
    • 1.Sa4+?
      • 1...Kd4
        • 2.Bg7#
      • 1...Sxc2!
    • 1.Sce4+?
      • 1...Kd4
        • 2.Bg7#
      • 1...Sxc2!
    • 1.Rc5+?
      • 1...Kd4
        • 2.Se2#
        • 2.Sb5#
      • 1...Rxc5
        • 2.Rf4#
      • 1...Kxc5!
    • 1.Qb3+?
      • 1...Kd4
        • 2.Se2#
        • 2.Sb5#
        • 2.Bg7#
      • 1...Kxb3!
  • Keys
    • 1.Rb5!
      • threat
        • 2.Rf4#
      • 1...Kd4
        • 2.Se2#
      • 1...Sxg6
        • 2.Rb4#
      • 1...Sxg8
        • 2.Rb4#
      • 1...Qe4
        • 2.Qa4#
      • 1...Rd4
        • 2.Qb3#
      • 1...Sd5
        • 2.Qe4#
      • 1...Sf5
        • 2.Rb4#
      • 1...Sc6
        • 2.Rd7#
      • 1...Sc8
        • 2.Rb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 3
  • Sets
    • Q(g);N_GUARD::QAR2(A)
    • Q(g);N_GUARD::QAR2(A),XQ(g)
    • S(f);OGATE,P_PINR(H)::B(K)+R(H)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(d);P-FLIGHT::B(J)
      • Refutation
        • S(a);XQ(A)
    • Try
      • S(E);CHECK
      • Vars
        • K(d);P-FLIGHT::B(J)
      • Refutation
        • S(a);XQ(A)
    • Try
      • S(E);CHECK
      • Vars
        • K(d);P-FLIGHT::B(J)
      • Refutation
        • S(a);XQ(A)
    • Try
      • S(E);CHECK
      • Vars
        • K(d);P-FLIGHT::B(J)
      • Refutation
        • S(a);XQ(A)
    • Try
      • S(E);CHECK
      • Vars
        • K(d);P-FLIGHT::B(J)
      • Refutation
        • S(a);XQ(A)
    • Try
      • R(F);CHECK
      • Vars
        • R(e);SBLOCK,XR(F)::B(K)+R(H),DCHECK
      • Refutation
        • K(d);P-FLIGHT,P_SPINS(f),XR(F)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(d);S_FLIGHT,XQ(A)
  • Actual
    • R(F);
    • Threat
      • B(K)+R(H),DCHECK
    • Vars
      • K(d);P-FLIGHT::S(E)
      • S(f);P_PINR(H),XP(G)::R1(F)
      • S(f);P_PINR(H),XB(K)::R1(F)
      • Q(g);N_GUARD,P_PINP(G)::QAR2(A)
      • R(h);SBLOCK::QAB1(A)
      • S(f);P_PINR(H),S_CUTQ(g),S_CUTR(h)::QAR2(A)
      • S(f);P_PINR(H)::R1(F)
      • S(f);OGATE,P_PINR(H)::B(K)+R(H)
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