MESON Chess Problem Database

Problem Display
PID: 106248 (bNr3r1/p1p3p1/8/RP1k1P1R/1Qp1p2K/4P2B/3P3B/3n4 w - - 0 1)

Szabo, Istvan

Karacsonyi lap, 1966

bNr3r1/p1p3p1/8/RP1k1P1R/1Qp1p2K/4P2B/3P3B/3n4

#2

11 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bc6
      • 2.bxc6#
    • 1...c3
      • 2.Qd4#
    • 1...c5
      • 2.bxc5 ep#
    • 1...c6
      • 2.Qd6#
      • 2.bxc6#
    • 1...g5+
      • 2.fxg5 ep#
    • 1...g6
      • 2.fxg6#
  • Tries
    • 1.Sa6?
      • threat
        • 2.Qc5#
      • 1...g5+
        • 2.fxg5 ep#
      • 1...c5!
    • 1.Sd7?
      • threat
        • 2.Qc5#
      • 1...g5+
        • 2.fxg5 ep#
      • 1...c5!
    • 1.Bd6?
      • threat
        • 2.Qc5#
      • 1...g5+
        • 2.fxg5 ep#
      • 1...c5
        • 2.bxc5 ep#
      • 1...cxd6!
    • 1.Bxc7?
      • threat
        • 2.Qd6#
        • 2.b6#
      • 1...g5+
        • 2.fxg5 ep#
      • 1...Rxb8
        • 2.Qd6#
      • 1...Sxe3
        • 2.Qd6#
      • 1...Rcd8
        • 2.b6#
      • 1...Rgd8
        • 2.b6#
      • 1...Bc6
        • 2.Qd6#
        • 2.bxc6#
      • 1...Sc3
        • 2.Qd6#
      • 1...c3
        • 2.Qd4#
        • 2.b6#
      • 1...Rxc7!
  • Keys
    • 1.d4!
      • threat
        • 2.Qc5#
      • 1...g5+
        • 2.fxg5 ep#
      • 1...cxd4 ep
        • 2.Qd4#
      • 1...exd4 ep
        • 2.Bg2#
      • 1...c5
        • 2.bxc5 ep#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • B(h);OGATE::R(G)+P(H),XB(h)
    • P(b);OGATE::QAR1(E)
    • P(f);OGATE::R(G)+P(H),XP(f),EP
    • P(g);CHECK,OGATE::R(J)+P(I),XP(g),EP
    • P(g);OGATE::R(J)+P(I),XP(g)
  • Tries
    • Try
      • S(K);
      • Threat
        • QAR1(E)
      • Vars
        • P(g);CHECK,OGATE::R(J)+P(I),XP(g),EP
      • Refutation
        • P(f);
    • Try
      • S(K);
      • Threat
        • QAR1(E)
      • Vars
        • P(g);CHECK,OGATE::R(J)+P(I),XP(g),EP
      • Refutation
        • P(f);
    • Try
      • B(B);
      • Threat
        • QAR1(E)
      • Vars
        • P(g);CHECK,OGATE::R(J)+P(I),XP(g),EP
        • P(f);OGATE::R(G)+P(H),XP(f),EP
      • Refutation
        • P(f);XB(B)
    • Try
      • B(B);XP(f)
      • Threat
        • DUALS(2)
      • Vars
        • P(g);CHECK,OGATE::R(J)+P(I),XP(g),EP
        • R(i);XS(K)::QAR1(E)
        • S(a);XP(C)::QAR1(E)
        • R(i);::R(G)+P(H)
        • R(j);::R(G)+P(H)
        • S(a);::QAR1(E)
      • Refutation
        • R(i);XB(B)
  • Actual
    • P(A);
    • Threat
      • QAR1(E)
    • Vars
      • P(g);CHECK,OGATE::R(J)+P(I),XP(g),EP
      • P(b);EP,OGATE,XP(A)::QAR1(E)
      • P(c);EP,OGATEB,XP(A)::B(D)
      • P(f);OGATE::R(G)+P(H),XP(f),EP
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