MESON Chess Problem Database

Problem Display
PID: 95082 (8/p5r1/3p4/Nn1k4/N2PR3/2pR1P2/8/K1Q2B2 w - - 0 1)

Golha, Jan

Nedelna Pravda, 1979

8/p5r1/3p4/Nn1k4/N2PR3/2pR1P2/8/K1Q2B2

#2

9 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rg5
      • 2.Qxg5#
    • 1...Rb7
      • 2.Qg5#
    • 1...Rc7
      • 2.Qg5#
    • 1...Rd7
      • 2.Qg5#
    • 1...Rh7
      • 2.Qg5#
    • 1...Sa3
      • 2.Sxc3#
    • 1...Sxd4
      • 2.Rdxd4#
    • 1...Sc7
      • 2.Sxc3#
    • 1...a6
      • 2.Sb6#
  • Tries
    • 1.Rd2?
      • threat
        • 2.Bc4#
      • 1...Sa3
        • 2.Sxc3#
      • 1...Rc7!
    • 1.Rxc3?
      • threat
        • 2.Bc4#
      • 1...Rc7
        • 2.Qg5#
      • 1...Sa3!
    • 1.Rde3?
      • threat
        • 2.Bc4#
      • 1...Sa3
        • 2.Sxc3#
      • 1...Rc7!
    • 1.Qa3?
      • threat
        • 2.Qa2#
        • 2.Qb3#
      • 1...Sxa3
        • 2.Sxc3#
      • 1...Rg2
        • 2.Qb3#
      • 1...Rc7!
    • 1.Qf4?
      • threat
        • 2.Qf5#
      • 1...Rg5
        • 2.Qxg5#
        • 2.Qf7#
      • 1...Rf7
        • 2.Qxf7#
      • 1...Re7!
    • 1.Qb1?
      • threat
        • 2.Qa2#
        • 2.Qb3#
        • 2.Qxb5#
      • 1...Sxd4
        • 2.Rdxd4#
        • 2.Qa2#
        • 2.Qb3#
        • 2.Qb5#
      • 1...Rg2
        • 2.Qb3#
        • 2.Qxb5#
      • 1...Rb7
        • 2.Qa2#
        • 2.Qb3#
      • 1...Sa3
        • 2.Sxc3#
      • 1...Sc7
        • 2.Sxc3#
        • 2.Qa2#
        • 2.Qb3#
        • 2.Qb7#
      • 1...a6
        • 2.Sb6#
        • 2.Qa2#
        • 2.Qb3#
      • 1...Rc7!
    • 1.Qc2?
      • threat
        • 2.Qb3#
        • 2.Qa2#
      • 1...Rg2
        • 2.Qb3#
      • 1...Sa3
        • 2.Sxc3#
      • 1...Rc7!
    • 1.Qxc3?
      • threat
        • 2.Qb3#
        • 2.Qc4#
        • 2.Qc6#
      • 1...Sxc3
        • 2.Sxc3#
      • 1...Sa3
        • 2.Qc6#
      • 1...Rc7!
  • Keys
    • 1.Rd1!
      • threat
        • 2.Bc4#
      • 1...Rc7
        • 2.Qg5#
      • 1...Sa3
        • 2.Sxc3#

There are these versions: 136687

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 7
  • Sets
    • R(f);N_GUARD::QAR(B),XR(f)
    • R(f);N_GUARD::QAR(B)
    • S(b);N_GUARD::S(F),XP(a)
    • S(b);OGATE,P_SPINS(b),XP(G)::R1(D),XS(b)
    • P(e);N_GUARD::S(F)
  • Tries
    • Try
      • R(D);
      • Threat
        • B(C)
      • Vars
        • S(b);N_GUARD::S(F),XP(a)
      • Refutation
        • R(f);
    • Try
      • R(D);XP(a)
      • Threat
        • B(C)
      • Vars
        • R(f);N_GUARD::QAR(B)
      • Refutation
        • S(b);
    • Try
      • R(D);
      • Threat
        • B(C)
      • Vars
        • S(b);N_GUARD::S(F),XP(a)
      • Refutation
        • R(f);
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);N_GUARD,XQ(B)::S(F),XP(a)
        • R(f);::QAB(B)
      • Refutation
        • R(f);
    • Try
      • Q(B);
      • Threat
        • QAR2(B)
      • Vars
        • R(f);N_GUARD::QAB(B),XR(f)
      • Refutation
        • R(f);
    • Try
      • Q(B);
      • Threat
        • DUALS(3)
      • Vars
        • S(b);N_GUARD::S(F),XP(a)
      • Refutation
        • R(f);
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • R(f);::QAB(B)
        • S(b);N_GUARD::S(F),XP(a)
      • Refutation
        • R(f);
    • Try
      • Q(B);XP(a)
      • Threat
        • DUALS(3)
      • Vars
        • S(b);XQ(B)::S(F),XS(b)
        • S(b);::QAB1(B)
      • Refutation
        • R(f);
  • Actual
    • R(D);
    • Threat
      • B(C)
    • Vars
      • R(f);N_GUARD::QAR(B)
      • S(b);N_GUARD::S(F),XP(a)
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