MESON Chess Problem Database

Problem Display
PID: 203061 (8/4P3/3p2p1/2pPp1P1/2Pk4/1PpNp1N1/2R3P1/1KQ5 w - - 0 1)

Lebloch, Ivo

Sachova skladba, 1990

8/4P3/3p2p1/2pPp1P1/2Pk4/1PpNp1N1/2R3P1/1KQ5

#2

11 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd3
      • 2.Qd1#
  • Tries
    • 1.Sb2?
      • threat
        • 2.Qd1#
      • 1...e2
        • 2.Qg1#
      • 1...e4!
    • 1.Sf1?
      • threat
        • 2.Qxe3#
      • 1...Kxd3
        • 2.Qxe3#
      • 1...e2
        • 2.Qe3#
      • 1...Ke4!
    • 1.Re2?
      • threat
        • 2.Qxe3#
      • 1...Kxd3
        • 2.Qxe3#
        • 2.Qd1#
      • 1...c2+!
    • 1.Rxc3?
      • 1...e4
        • 2.Se2#
      • 1...e2!
    • 1.Qd1?
      • threat
        • 2.Sc1#
        • 2.Se1#
        • 2.Sb2#
        • 2.Sf2#
        • 2.Sb4#
        • 2.Sf4#
      • 1...e4
        • 2.Se2#
      • 1...e2!
    • 1.Qe1?
      • threat
        • 2.Qxc3#
      • 1...Kxd3
        • 2.Qxc3#
        • 2.Qd1#
      • 1...e2!
    • 1.Qg1?
      • 1...Kxd3
        • 2.Qd1#
      • 1...e4!
    • 1.e8Q?
      • 1...Kxd3
        • 2.Qd1#
      • 1...e4
        • 2.Qxe4#
      • 1...e2!
  • Keys
    • 1.Sxe5!
      • 1...Kxe5
        • 2.Qxe3#
      • 1...dxe5
        • 2.Qd1#
      • 1...e2
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(c);OGATEB,P-FLIGHT,XS(F)::QAR2(B)
  • Tries
    • Try
      • S(F);
      • Threat
        • QAR(B)
      • Vars
        • P(b);OGATEB::QAB(B)
      • Refutation
        • P(e);
    • Try
      • S(G);
      • Threat
        • QAB1(B),XP(b)
      • Vars
        • K(c);P-FLIGHT,XS(F)::QAR1(B),XP(b)
        • P(b);::QAB1(B)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • R(C);
      • Threat
        • QAB1(B),XP(b)
      • Refutation
        • P(a);CHECK
    • Try
      • R(C);XP(a)
      • Vars
        • P(e);SBLOCK::S(G)
      • Refutation
        • P(b);
    • Try
      • Q(B);
      • Threat
        • DUALS(6)
      • Vars
        • P(e);SBLOCK::S(G)
      • Refutation
        • P(b);
    • Try
      • Q(B);
      • Threat
        • QAB1(B),XP(a)
      • Refutation
        • P(b);
    • Try
      • Q(B);P_PINP(b)
      • Vars
        • K(c);N_SPINP(b),OGATEB,P-FLIGHT,XS(F)::QAR2(B)
      • Refutation
        • P(e);
    • Try
      • P(K);
      • Vars
        • K(c);OGATEB,P-FLIGHT,XS(F)::QAR2(B)
        • P(e);OGATE::QAR1(K),XP(e)
      • Refutation
        • P(b);
  • Actual
    • S(F);XP(e)
    • Vars
      • K(c);S_FLIGHT,XS(F)::QAR2(B),XP(b)
      • P(f);SBLOCK,XS(F)::QAR(B)
      • P(b);OGATE::QAR2(B)
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