MESON Chess Problem Database

Problem Display
PID: 264095 (3n2b1/3BR3/1Ppk2PQ/3Np1R1/3P3b/K3N1p1/8/8 w - - 0 1)

Felkai, Imre

Tijdschrift vd KNSB, 1939

3n2b1/3BR3/1Ppk2PQ/3Np1R1/3P3b/K3N1p1/8/8

#2

10 + 7

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd5
      • 2.Sf5#
    • 1...Sf7
      • 2.gxf7#
    • 1...e4
      • 2.Sc4#
    • 1...cxd5
      • 2.Sf5#
    • 1...c5
      • 2.dxe5#
  • Tries
    • 1.Rgxe5?
      • threat
        • 2.Sc4#
        • 2.Sf5#
      • 1...Bxd5
        • 2.Sf5#
      • 1...cxd5
        • 2.Sf5#
      • 1...Be6
        • 2.Sc4#
      • 1...Bxe7!
    • 1.Qg7?
      • threat
        • 2.Qxe5#
      • 1...Sf7
        • 2.Qf6#
      • 1...e4
        • 2.Sc4#
        • 2.Qe5#
      • 1...exd4!
    • 1.Qh8?
      • threat
        • 2.Qxe5#
      • 1...Sf7
        • 2.Qf6#
      • 1...e4
        • 2.Sc4#
        • 2.Qe5#
      • 1...exd4!
  • Keys
    • 1.Kb4!
      • threat
        • 2.dxe5#
      • 1...c5+
        • 2.dxc5#
      • 1...Bxd5
        • 2.Sf5#
      • 1...exd4
        • 2.Sc4#
      • 1...cxd5
        • 2.Sf5#
      • 1...Sf7
        • 2.gxf7#
      • 1...e4
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(g);SBLOCK,XS(D)::S(B)
    • S(f);OGATE::QAR(H)+P(G),XS(f)
    • P(c);::S(B)
    • P(d);SBLOCK,XS(D)::S(B)
    • P(d);SBLOCK::P(C),XP(c)
  • Tries
    • Try
      • R(E);XP(c)
      • Threat
        • DUALS(2)
      • Vars
        • B(g);XS(D)::S(B)
        • P(d);XS(D)::S(B)
        • B(g);::S(B)
      • Refutation
        • B(b);XR(J)
    • Try
      • Q(H);
      • Threat
        • QAB1(H),XP(c)
      • Vars
        • S(f);N_GUARD,S_CUTB(g)::QAR2(H)
      • Refutation
        • P(c);XP(C)
    • Try
      • Q(H);
      • Threat
        • QAB1(H),XP(c)
      • Vars
        • S(f);N_GUARD,S_CUTB(g)::QAR2(H)
      • Refutation
        • P(c);XP(C)
  • Actual
    • K(A);S_FLIGHT
    • Threat
      • P(C),XP(c)
    • Vars
      • P(d);CHECK,OGATE::P(C),XP(d)
      • B(g);SBLOCK,XS(D)::S(B)
      • P(c);XP(C)::S(B)
      • P(d);SBLOCK,XS(D)::S(B)
      • S(f);OGATE::QAR(H)+P(G),XS(f)
      • P(c);::S(B)
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