MESON Chess Problem Database

Problem Display
PID: 10123 (b3n3/5Rp1/8/K1pN1N1p/n3kP2/6Pr/5B2/3Q4 w - - 0 1)

Mlynka, Karol

2nd HM., Die Schwalbe, 1962

b3n3/5Rp1/8/K1pN1N1p/n3kP2/6Pr/5B2/3Q4

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rxg3
      • 2.Sxg3#
    • 1...Bxd5
      • 2.Qe2#
    • 1...Sb2
      • 2.Sc3#
    • 1...Sc3
      • 2.Sxc3#
    • 1...Sb6
      • 2.Sc3#
    • 1...Sd6
      • 2.Sxd6#
    • 1...Sf6
      • 2.Sd6#
    • 1...Sc7
      • 2.Sd6#
  • Tries
    • 1.Kxa4?
      • threat
        • 2.Sc3#
      • 1...Rxg3
        • 2.Sxg3#
      • 1...Bxd5
        • 2.Qe2#
      • 1...Sf6
        • 2.Sd6#
      • 1...Bc6+!
    • 1.Sb4?
      • threat
        • 2.Qe2#
        • 2.Qd3#
      • 1...Rxg3
        • 2.Sxg3#
      • 1...Sf6
        • 2.Sd6#
        • 2.Qd3#
      • 1...Sb2
        • 2.Qe2#
      • 1...Sc3
        • 2.Qd3#
      • 1...c4
        • 2.Qe2#
      • 1...cxb4!
    • 1.Sc7?
      • threat
        • 2.Qe2#
      • 1...Rxg3
        • 2.Sxg3#
      • 1...Sxc7
        • 2.Sd6#
      • 1...Sf6
        • 2.Sd6#
      • 1...Sc3!
    • 1.Sde7?
      • threat
        • 2.Qe2#
      • 1...Rxg3
        • 2.Sxg3#
      • 1...Sc3!
    • 1.Sfe3?
      • threat
        • 2.Re7#
      • 1...Bxd5
        • 2.Qxd5#
      • 1...Sc7!
    • 1.Sh4?
      • threat
        • 2.Re7#
        • 2.Qf3#
      • 1...Rxg3
        • 2.Re7#
      • 1...Bxd5
        • 2.Qc2#
        • 2.Qe2#
        • 2.Qf3#
        • 2.Qb1#
      • 1...Sc7
        • 2.Qf3#
      • 1...Rxh4!
    • 1.Sfe7?
      • threat
        • 2.Qe2#
      • 1...Sc3
        • 2.Sxc3#
      • 1...Rxg3!
    • 1.Sxg7?
      • threat
        • 2.Re7#
      • 1...Bxd5
        • 2.Qe2#
      • 1...Sc7
        • 2.Sf6#
      • 1...Sxg7!
  • Keys
    • 1.Sde3!
      • threat
        • 2.Re7#
      • 1...Rxg3
        • 2.Sxg3#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Sc7
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 5
  • Sets
    • R(a);XP(C)::S(G),XR(a)
    • B(g);SBLOCK,XS(F)::QAR2(A)
    • S(b);N_GUARD::S(F)
    • S(b);N_GUARD::S(F),XS(b)
    • S(h);N_GUARD::S(G),XS(h)
    • S(h);N_GUARD::S(G)
  • Tries
    • Try
      • K(E);P-FLIGHT,XS(b)
      • Threat
        • S(F)
      • Vars
        • R(a);XP(C)::S(G),XR(a)
        • B(g);SBLOCK,XS(F)::QAR2(A)
        • S(h);N_GUARD::S(G)
      • Refutation
        • B(g);CHECK
    • Try
      • S(F);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);XP(C)::S(G),XR(a)
        • S(b);::QAR2(A)
        • S(b);::QAB1(A)
        • P(d);::QAR2(A)
      • Refutation
        • P(d);XS(F)
    • Try
      • S(F);
      • Threat
        • QAR2(A)
      • Vars
        • R(a);XP(C)::S(G),XR(a)
        • S(h);N_GUARD,XS(F)::S(G)
        • S(h);N_GUARD::S(G)
      • Refutation
        • S(b);
    • Try
      • S(F);
      • Threat
        • QAR2(A)
      • Vars
        • R(a);XP(C)::S(G),XR(a)
      • Refutation
        • S(b);
    • Try
      • S(G);
      • Threat
        • R(H)
      • Vars
        • B(g);OGATE,XS(F)::QAB1(A),XB(g)
      • Refutation
        • S(h);
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);XP(C)::R(H)
        • S(h);::QAB1(A)
      • Refutation
        • R(a);XS(G)
    • Try
      • S(G);
      • Threat
        • QAR2(A)
      • Vars
        • S(b);N_GUARD::S(F),XS(b)
      • Refutation
        • R(a);XP(C)
    • Try
      • S(G);XP(f)
      • Threat
        • R(H)
      • Vars
        • B(g);SBLOCK,XS(F)::QAR2(A)
        • S(h);N_GUARD::S(F)
      • Refutation
        • S(h);XS(G)
  • Actual
    • S(F);
    • Threat
      • R(H)
    • Vars
      • R(a);XP(C)::S(G),XR(a)
      • B(g);N_GUARD::QAB1(A),XB(g)
      • S(h);N_GUARD::S(G)
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