MESON Chess Problem Database
Problem Display
PID: 24973 (b7/b7/4pNnK/2pp1kP1/QR6/8/2N4B/3n3B w - - 0 1)
Groeneveld, Cornelis
1st HM., Manev JT, 1987
#2
8 + 8
SOLUTION
- SOUND
- Sets
- 1...Sb2
- 2.Se3#
- 1...Sf2
- 2.Se3#
- 1...Sc3
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Se5
- 2.Rf4#
- 1...e5
- 2.Qd7#
- 1...Sb2
- Tries
- 1.Bg2?
- threat
- 2.Bh3#
- 1...Sf2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Se5
- 2.Rf4#
- 1...Sf4!
- threat
- 1.Bf3?
- threat
- 2.Bg4#
- 1...Sf2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Se5
- 2.Rf4#
- 1...Sf4!
- threat
- 1.Rf4+?
- 1...Sxf4
- 2.Qxf4#
- 1...Ke5!
- 1...Sxf4
- 1.Rb6?
- threat
- 2.Qg4#
- 1...Sf4
- 2.Qxf4#
- 1...Sf2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Se5
- 2.Qf4#
- 1...c4
- 2.Sd4#
- 1...d4!
- threat
- 1.Rb7?
- threat
- 2.Qg4#
- 1...Sf4
- 2.Qxf4#
- 1...d4
- 2.Be4#
- 1...Sf2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Se5
- 2.Qf4#
- 1...c4!
- threat
- 1.Qb3?
- threat
- 2.Qd3#
- 2.Qh3#
- 1...e5
- 2.Qh3#
- 1...c4
- 2.Qh3#
- 1...Sb2
- 2.Se3#
- 2.Qh3#
- 1...Sf2
- 2.Se3#
- 1...Sc3
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 2.Qd3#
- 1...Se5
- 2.Rf4#
- 1...d4
- 2.Qh3#
- 1...Sf4!
- threat
- 1.Qb5?
- threat
- 2.Qd3#
- 1...e5
- 2.Qd7#
- 1...c4
- 2.Be4#
- 1...Sb2
- 2.Se3#
- 1...Sf2
- 2.Se3#
- 1...Sc3
- 2.Se3#
- 1...Se5
- 2.Rf4#
- 1...d4
- 2.Sxd4#
- 1...Sf4!
- threat
- 1.Qa3?
- threat
- 2.Qd3#
- 2.Qh3#
- 1...e5
- 2.Qh3#
- 1...c4
- 2.Qh3#
- 1...Sb2
- 2.Se3#
- 2.Qh3#
- 1...Sf2
- 2.Se3#
- 1...Sc3
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 2.Qd3#
- 1...Se5
- 2.Rf4#
- 1...d4
- 2.Qh3#
- 1...Sf4!
- threat
- 1.Bg2?
- Keys
- 1.Rb5!
- threat
- 2.Qg4#
- 1...Sf4
- 2.Qxf4#
- 1...Sf2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Se5
- 2.Qf4#
- 1...c4
- 2.Be4#
- 1...d4
- 2.Sxd4#
- threat
- 1.Rb5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 3
- Sets
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(f);N_GUARD,SBLOCK::R1(E)
- P(e);OGATEB::QAB(D)
- Tries
- Try
- B(A);
- Threat
- B(A)
- Vars
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(f);N_GUARD,SBLOCK::R1(E)
- Refutation
- S(f);
- Try
- B(A);
- Threat
- B(A)
- Vars
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(f);N_GUARD,SBLOCK::R1(E)
- Refutation
- S(f);
- Try
- R(E);CHECK
- Vars
- S(f);OGATE,XR(E)::QAR1(D),XS(f)
- Refutation
- K(d);P-FLIGHT
- Try
- R(E);
- Threat
- QAB1(D)
- Vars
- S(f);N_GUARD::QAR1(D),XS(f)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(f);N_GUARD::QAR1(D)
- P(b);N_GUARD::S(B)
- Refutation
- P(c);
- Try
- R(E);
- Threat
- QAB1(D)
- Vars
- S(f);N_GUARD::QAR1(D),XS(f)
- P(c);N_GUARD::B(A)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(f);N_GUARD::QAR1(D)
- Refutation
- P(b);
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- P(e);::QAB(D)
- P(b);::QAB(D)
- S(a);N_GUARD::S(B)
- S(f);N_GUARD,SBLOCK::R1(E)
- P(c);::QAB(D)
- Refutation
- S(f);
- Try
- Q(D);
- Threat
- QAB(D)
- Vars
- P(e);OGATEB::QAB(D)
- P(b);P_SPINP(c)::B(A)
- S(a);N_GUARD::S(B)
- S(f);N_GUARD,SBLOCK::R1(E)
- P(c);P_SPINP(b)::S(B),XP(c)
- Refutation
- S(f);
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- P(e);::QAB(D)
- P(b);::QAB(D)
- S(a);N_GUARD::S(B)
- S(f);N_GUARD,SBLOCK::R1(E)
- P(c);::QAB(D)
- Refutation
- S(f);
- Try
- Actual
- R(E);
- Threat
- QAB1(D)
- Vars
- S(f);N_GUARD::QAR1(D),XS(f)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(f);N_GUARD::QAR1(D)
- P(b);P_SPINP(c)::B(A)
- P(c);P_SPINP(b)::S(B),XP(c)
Developed and maintained by Brian Stephenson.
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