MESON Chess Problem Database
Problem Display
PID: 46122 (4b3/3nPp2/2NQ1P2/p2p4/P3k1B1/1p4Pn/1K1P4/2N5 w - - 0 1)
Groeneveld, Cornelis
4th HM., Best Problems, 1998-2000
#2
10 + 8
| 102 | Probleemblad | 2002 |
| 5454 | Near Snap | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Sg1
- 2.Qf4#
- 1...Sf2
- 2.Qf4#
- 1...Sf4
- 2.Qxf4#
- 1...Sg5
- 2.Qf4#
- 1...Sc5
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sb6
- 2.Qe5#
- 1...Sxf6
- 2.Qe5#
- 1...Sb8
- 2.Qe5#
- 1...Sf8
- 2.Qe5#
- 1...d4
- 2.Qxd4#
- 1...Sg1
- Tries
- 1.Ka1?
- 1...Sxf6
- 2.Qe5#
- 1...Sg1
- 2.Qf4#
- 1...Sf2
- 2.Qf4#
- 1...Sf4
- 2.Qxf4#
- 1...Sg5
- 2.Qf4#
- 1...Sc5
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sb6
- 2.Qe5#
- 1...Sb8
- 2.Qe5#
- 1...Sf8
- 2.Qe5#
- 1...d4
- 2.Qxd4#
- 1...b2+!
- 1...Sxf6
- 1.Kb1?
- 1...Sxf6
- 2.Qe5#
- 1...Sg1
- 2.Qf4#
- 1...Sf2
- 2.Qf4#
- 1...Sf4
- 2.Qxf4#
- 1...Sg5
- 2.Qf4#
- 1...Sc5
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sb6
- 2.Qe5#
- 1...Sb8
- 2.Qe5#
- 1...Sf8
- 2.Qe5#
- 1...d4
- 2.Qxd4#
- 1...b2!
- 1...Sxf6
- 1.Ka3?
- 1...Sxf6
- 2.Qe5#
- 1...Sg1
- 2.Qf4#
- 1...Sf2
- 2.Qf4#
- 1...Sf4
- 2.Qxf4#
- 1...Sg5
- 2.Qf4#
- 1...Sc5
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sb6
- 2.Qe5#
- 1...Sb8
- 2.Qe5#
- 1...Sf8
- 2.Qe5#
- 1...d4
- 2.Qxd4#
- 1...b2!
- 1...Sxf6
- 1.Kxb3?
- 1...Sxf6
- 2.Qe5#
- 1...Sg1
- 2.Qf4#
- 1...Sf2
- 2.Qf4#
- 1...Sf4
- 2.Qxf4#
- 1...Sg5
- 2.Qf4#
- 1...Se5
- 2.Qxe5#
- 1...Sb6
- 2.Qe5#
- 1...Sb8
- 2.Qe5#
- 1...Sf8
- 2.Qe5#
- 1...d4
- 2.Qxd4#
- 1...Sc5+!
- 1...Sxf6
- 1.Kc3?
- 1...d4+
- 2.Qxd4#
- 1...Sxf6
- 2.Qe5#
- 1...Sg1
- 2.Qf4#
- 1...Sf2
- 2.Qf4#
- 1...Sf4
- 2.Qxf4#
- 1...Sg5
- 2.Qf4#
- 1...Sc5
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sb6
- 2.Qe5#
- 1...Sb8
- 2.Qe5#
- 1...Sf8
- 2.Qe5#
- 1...b2!
- 1...d4+
- 1.Qb4+?
- 1...d4
- 2.Qxd4#
- 1...axb4!
- 1...d4
- 1.Qc5?
- threat
- 2.Qe3#
- 2.Qd4#
- 2.d3#
- 1...d4
- 2.Qxd4#
- 2.Qf5#
- 1...Sf2
- 2.Qe3#
- 2.Qd4#
- 1...Sf4
- 2.Qe3#
- 2.Qd4#
- 1...Se5
- 2.Qe3#
- 2.Qd4#
- 1...Sxc5!
- threat
- 1.Qc7?
- 1...Sxf6
- 2.Qe5#
- 1...Sg1
- 2.Qf4#
- 1...Sf2
- 2.Qf4#
- 1...Sf4
- 2.Qxf4#
- 1...Sg5
- 2.Qf4#
- 1...Sc5
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sb6
- 2.Qe5#
- 1...Sb8
- 2.Qe5#
- 1...Sf8
- 2.Qe5#
- 1...d4!
- 1...Sxf6
- 1.Qe6+?
- 1...Se5
- 2.Qf5#
- 2.Qxe5#
- 1...fxe6!
- 1...Se5
- 1.d4?
- 1...Sxf6
- 2.Qe5#
- 1...Sg1
- 2.Qf4#
- 1...Sf2
- 2.Qf4#
- 1...Sf4
- 2.Qxf4#
- 1...Sg5
- 2.Qf4#
- 1...Sc5
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sb6
- 2.Qe5#
- 1...Sb8
- 2.Qe5#
- 1...Sf8
- 2.Qe5#
- 1...Ke3!
- 1...Sxf6
- 1.Ka1?
- Keys
- 1.Sd3!
- 1...Kxd3
- 2.Qxd5#
- 1...Sxf6
- 2.Sc5#
- 1...Sg1
- 2.Sf2#
- 1...Sf2
- 2.Sxf2#
- 1...Sf4
- 2.Sf2#
- 1...Sg5
- 2.Sf2#
- 1...Sc5
- 2.Sxc5#
- 1...Se5
- 2.Sc5#
- 1...Sb6
- 2.Sc5#
- 1...Sb8
- 2.Sc5#
- 1...Sf8
- 2.Sc5#
- 1...d4
- 2.Qxd4#
- 1...Kxd3
- 1.Sd3!
Anticipated by 110767(1953)
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 10
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- S(b);N_GUARD::QAR1(H)
- S(b);N_GUARD::QAR1(H),XS(b)
- S(f);N_GUARD::QAR1(H)
- S(f);N_GUARD::QAR1(H),XS(f)
- S(f);N_GUARD,XP(I)::QAR1(H)
- P(e);OGATE::QAR1(H),XP(e)
- Tries
- Try
- K(B);S_FLIGHT
- Vars
- S(f);N_GUARD,XP(I)::QAR1(H)
- S(b);N_GUARD::QAR1(H)
- S(b);N_GUARD::QAR1(H),XS(b)
- S(f);N_GUARD::QAR1(H)
- S(f);N_GUARD::QAR1(H),XS(f)
- P(e);OGATE::QAR1(H),XP(e)
- Refutation
- P(a);CHECK
- Try
- K(B);P-FLIGHT
- Vars
- S(f);N_GUARD,XP(I)::QAR1(H)
- S(b);N_GUARD::QAR1(H)
- S(b);N_GUARD::QAR1(H),XS(b)
- S(f);N_GUARD::QAR1(H)
- S(f);N_GUARD::QAR1(H),XS(f)
- P(e);OGATE::QAR1(H),XP(e)
- Refutation
- P(a);
- Try
- K(B);S_FLIGHT
- Vars
- S(f);N_GUARD,XP(I)::QAR1(H)
- S(b);N_GUARD::QAR1(H)
- S(b);N_GUARD::QAR1(H),XS(b)
- S(f);N_GUARD::QAR1(H)
- S(f);N_GUARD::QAR1(H),XS(f)
- P(e);OGATE::QAR1(H),XP(e)
- Refutation
- P(a);
- Try
- K(B);P-FLIGHT,XP(a)
- Vars
- S(f);N_GUARD,XP(I)::QAR1(H)
- S(b);N_GUARD::QAR1(H)
- S(b);N_GUARD::QAR1(H),XS(b)
- S(f);N_GUARD::QAR1(H),XS(f)
- S(f);N_GUARD::QAR1(H)
- P(e);OGATE::QAR1(H),XP(e)
- Refutation
- S(f);CHECK
- Try
- K(B);S_FLIGHT
- Vars
- P(e);CHECK,OGATE::QAR1(H),XP(e)
- S(f);N_GUARD,XP(I)::QAR1(H)
- S(b);N_GUARD::QAR1(H)
- S(b);N_GUARD::QAR1(H),XS(b)
- S(f);N_GUARD::QAR1(H)
- S(f);N_GUARD::QAR1(H),XS(f)
- Refutation
- P(a);
- Try
- Q(H);CHECK
- Vars
- P(e);P_SPINP(e)::QAR1(H),XP(e)
- Refutation
- P(d);XQ(H)
- Try
- Q(H);
- Threat
- DUALS(3)
- Refutation
- S(f);XQ(H)
- Try
- Q(H);
- Vars
- S(f);N_GUARD,XP(I)::QAR1(H)
- S(b);N_GUARD::QAR1(H)
- S(b);N_GUARD::QAR1(H),XS(b)
- S(f);N_GUARD::QAR1(H)
- S(f);N_GUARD::QAR1(H),XS(f)
- Refutation
- P(e);
- Try
- Q(H);CHECK
- Refutation
- P(g);XQ(H)
- Try
- P(C);
- Vars
- S(f);N_GUARD,XP(I)::QAR1(H)
- S(b);N_GUARD::QAR1(H)
- S(b);N_GUARD::QAR1(H),XS(b)
- S(f);N_GUARD::QAR1(H)
- S(f);N_GUARD::QAR1(H),XS(f)
- Refutation
- K(c);P-FLIGHT
- Try
- Actual
- S(A);
- Vars
- K(c);P_SPINP(e),S_FLIGHT,XS(A)::QAR2(H),XP(e)
- S(f);N_GUARD,XP(I)::S(A)
- S(b);N_GUARD::S(A)
- S(b);N_GUARD::S(A),XS(b)
- S(f);N_GUARD::S(A),XS(f)
- S(f);N_GUARD::S(A)
- P(e);OGATE::QAR1(H),XP(e)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).