MESON Chess Problem Database

Problem Display
PID: 25876 (3Q1nK1/1pnBpp2/b2kp3/2NPN1P1/2P3P1/2B1pq2/8/3R4 w - - 0 1)

Labai, Zoltan

1st HM., McWilliam MT, 2000

3Q1nK1/1pnBpp2/b2kp3/2NPN1P1/2P3P1/2B1pq2/8/3R4

#2

11 + 10

56 The Problemist 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc5
      • 2.Qxc7#
    • 1...Qxd1
      • 2.Se4#
    • 1...Qe2
      • 2.Se4#
    • 1...Qe4
      • 2.Sxe4#
    • 1...Qxd5
      • 2.Se4#
    • 1...Qf1
      • 2.Se4#
    • 1...Qf2
      • 2.Se4#
    • 1...Qg3
      • 2.Se4#
    • 1...Qh3
      • 2.Se4#
    • 1...Qf6
      • 2.Se4#
    • 1...Bxc4
      • 2.Sxb7#
    • 1...Bb5
      • 2.Sxb7#
    • 1...Sb5
      • 2.Qb6#
    • 1...Sxd5
      • 2.Qb6#
    • 1...Se8
      • 2.Qb6#
  • Tries
    • 1.Kxf8?
      • threat
        • 2.Qxe7#
      • 1...Kxc5
        • 2.Qxc7#
      • 1...Sxd5
        • 2.Qb6#
      • 1...Qf6
        • 2.Se4#
      • 1...Sb5
        • 2.Qb6#
      • 1...Se8
        • 2.Qb6#
      • 1...Sa8!
    • 1.Sb3?
      • threat
        • 2.c5#
      • 1...Qxd1
        • 2.Sxf7#
      • 1...Bxc4
        • 2.Sxc4#
      • 1...b6!
    • 1.Scd3?
      • threat
        • 2.Bb4#
      • 1...Qxd5
        • 2.Sxf7#
      • 1...Sxd5
        • 2.c5#
      • 1...Bxc4!
    • 1.Sa4?
      • threat
        • 2.c5#
      • 1...Qxd1
        • 2.Sxf7#
      • 1...Bxc4
        • 2.Sxc4#
      • 1...b6!
    • 1.Sxa6?
      • threat
        • 2.Qxc7#
        • 2.c5#
      • 1...Qxd1
        • 2.Sxf7#
        • 2.Qxc7#
      • 1...Sxd5
        • 2.Qb6#
        • 2.Qc7#
        • 2.Qb8#
        • 2.c5#
      • 1...Sxa6
        • 2.Qb6#
      • 1...b6
        • 2.Qxc7#
      • 1...Sb5
        • 2.Qb6#
        • 2.c5#
      • 1...Sa8
        • 2.c5#
      • 1...Se8
        • 2.Qb6#
        • 2.c5#
      • 1...bxa6!
    • 1.Sxf3?
      • threat
        • 2.Se4#
      • 1...Kxc5
        • 2.Qxc7#
      • 1...f5!
    • 1.Sxf7+?
      • 1...Kxc5
        • 2.Qxc7#
      • 1...Qxf7+!
    • 1.Ba4+?
      • 1...Kxc5
        • 2.Qxc7#
      • 1...Sd7!
    • 1.Bb5+?
      • 1...Kxc5
        • 2.Qxc7#
      • 1...Sd7!
    • 1.Bxe6+?
      • 1...Kxc5
        • 2.Qxc7#
      • 1...Sd7!
    • 1.Bc8+?
      • 1...Kxc5
        • 2.Qxc7#
      • 1...Sd7!
    • 1.Be8+?
      • 1...Kxc5
        • 2.Qxc7#
      • 1...Sd7!
    • 1.dxe6+?
      • 1...Qxd1
        • 2.Se4#
      • 1...Qd5
        • 2.Se4#
      • 1...Sd5
        • 2.Qb6#
      • 1...Kxc5!
  • Keys
    • 1.Bb4!
      • threat
        • 2.Scd3#
      • 1...Kxe5
        • 2.Qxc7#
      • 1...Qxd5
        • 2.Sxf7#
      • 1...Bxc4
        • 2.Sxc4#
      • 1...Sxd5
        • 2.Qb8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 12
  • Sets
    • K(d);S_FLIGHT,XS(E)::QAR2(J),XS(g)
    • Q(b);N_GUARD,XR(A)::S(E)
    • Q(b);N_GUARD::S(E)
    • Q(b);N_GUARD::S(E),XQ(b)
    • Q(b);N_GUARD,P_SPINQ(b),XP(F)::S(E)
    • B(c);N_GUARD,XP(C)::S(E),XP(f)
    • B(c);N_GUARD::S(E),XP(f)
    • S(g);OGATE::QAR2(J)
    • S(g);OGATE,P_SPINS(g),XP(F)::QAR2(J)
  • Tries
    • Try
      • K(K);P-FLIGHT,XS(j)
      • Threat
        • QAB1(J),XP(h)
      • Vars
        • K(d);S_FLIGHT,XS(E)::QAR2(J),XS(g)
        • S(g);OGATE,P_SPINS(g),XP(F)::QAR2(J)
        • Q(b);N_GUARD::S(E)
        • S(g);OGATE::QAR2(J)
      • Refutation
        • S(g);
    • Try
      • S(E);
      • Threat
        • P(C)
      • Vars
        • Q(b);N_GUARD,XR(A)::S(G),XP(i)
        • B(c);XP(C)::S(G),XB(c)
      • Refutation
        • P(f);
    • Try
      • S(E);
      • Threat
        • B(B)
      • Vars
        • Q(b);N_GUARD,XP(F)::S(G),XP(i)
        • S(g);SBLOCK,XP(F)::P(C)
      • Refutation
        • B(c);XP(C)
    • Try
      • S(E);
      • Threat
        • P(C)
      • Vars
        • Q(b);N_GUARD,XR(A)::S(G),XP(i)
        • B(c);XP(C)::S(G),XB(c)
      • Refutation
        • P(f);
    • Try
      • S(E);XB(c)
      • Threat
        • DUALS(2)
      • Vars
        • S(g);OGATE,XS(E)::QAR2(J)
        • P(f);::QAB1(J),XS(g)
        • S(g);::P(C)
      • Refutation
        • P(f);XS(E)
    • Try
      • S(G);XQ(b)
      • Threat
        • S(E)
      • Vars
        • K(d);S_FLIGHT,XS(E)::QAR2(J),XS(g)
      • Refutation
        • P(i);
    • Try
      • S(G);CHECK,XP(i)
      • Vars
        • K(d);S_FLIGHT,XS(E)::QAR2(J),XS(g)
      • Refutation
        • Q(b);CHECK,XS(G)
    • Try
      • B(I);CHECK
      • Vars
        • K(d);S_FLIGHT,XS(E)::QAR2(J),XS(g)
      • Refutation
        • S(j);P_SPINS(j)
    • Try
      • B(I);CHECK
      • Vars
        • K(d);S_FLIGHT,XS(E)::QAR2(J),XS(g)
      • Refutation
        • S(j);P_SPINS(j)
    • Try
      • B(I);CHECK,XP(e)
      • Vars
        • K(d);S_FLIGHT,XS(E)::QAR2(J),XS(g)
      • Refutation
        • S(j);P_SPINS(j)
    • Try
      • B(I);CHECK
      • Vars
        • K(d);S_FLIGHT,XS(E)::QAR2(J),XS(g)
      • Refutation
        • S(j);P_SPINS(j)
    • Try
      • B(I);CHECK
      • Vars
        • K(d);S_FLIGHT,XS(E)::QAR2(J),XS(g)
      • Refutation
        • S(j);P_SPINS(j)
    • Try
      • P(F);CHECK,XP(e)
      • Vars
        • Q(b);XR(A)::S(E)
        • Q(b);P_SPINQ(b)::S(E)
        • S(g);OGATE,P_SPINS(g)::QAR2(J)
      • Refutation
        • K(d);S_FLIGHT,XS(E)
  • Actual
    • B(B);
    • Threat
      • B(B)+S(E)
    • Vars
      • K(d);S_FLIGHT,XS(G)::QAB(J),XS(g)
      • Q(b);N_GUARD,P_SPINQ(b),XP(F)::S(G),XP(i)
      • B(c);XP(C)::S(G),XB(c)
      • S(g);OGATEB,P_SPINS(g),XP(F)::QAB(J)
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