MESON Chess Problem Database
Problem Display
PID: 239147 (5r2/7q/8/2R5/1P1krp2/3P1QP1/2P1PPN1/1n2K1N1 w - - 0 1)
Groeneveld, Cornelis
Sachove umeni (Ceskoslovensky sach), 1959
#2
11 + 6
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qg8
- 2.Qxe4#
- 1...Qh1
- 2.Qxe4#
- 1...Qh2
- 2.Qxe4#
- 1...Qh3
- 2.Qxe4#
- 1...Qh4
- 2.Qxe4#
- 1...Qh5
- 2.Qxe4#
- 1...Qh6
- 2.Qxe4#
- 1...Qa7
- 2.Qxe4#
- 1...Qc7
- 2.Qxe4#
- 1...Qd7
- 2.Qxe4#
- 1...Qf7
- 2.Qxe4#
- 1...Qg7
- 2.Qxe4#
- 1...Qh8
- 2.Qxe4#
- 1...Rxe2+
- 2.Sxe2#
- 1...Re3
- 2.Qd5#
- 1...Re5
- 2.Rc4#
- 1...Re6
- 2.Qd5#
- 1...Re7
- 2.Qd5#
- 1...Ree8
- 2.Qd5#
- 1...Rf5
- 2.Qxe4#
- 1...Sd2
- 2.c3#
- 1...Sa3
- 2.c3#
- 1...Qg8
- Tries
- 1.Qh5?
- threat
- 2.Sf3#
- 2.Rc4#
- 2.Qd5#
- 1...Rxe2+
- 2.Sxe2#
- 1...fxg3
- 2.Rc4#
- 2.Qd5#
- 1...Qf5
- 2.Sf3#
- 1...Qg8
- 2.Sf3#
- 1...Qb7
- 2.Sf3#
- 2.Rc4#
- 1...Qc7
- 2.Sf3#
- 2.Qd5#
- 1...Qd7
- 2.Sf3#
- 2.Rc4#
- 1...Qf7
- 2.Sf3#
- 1...Re3
- 2.Rc4#
- 2.Qd5#
- 1...Re5
- 2.Sf3#
- 2.Qxe5#
- 1...Rf5
- 2.Sf3#
- 1...Rc8
- 2.Sf3#
- 2.Qd5#
- 1...Rd8
- 2.Sf3#
- 2.Rc4#
- 1...Sd2
- 2.Qd5#
- 2.c3#
- 1...Sa3
- 2.Sf3#
- 2.Qd5#
- 2.c3#
- 1...Sc3
- 2.Sf3#
- 2.Rc4#
- 1...f3
- 2.Rc4#
- 2.Qd5#
- 1...Qxh5!
- threat
- 1.Qxf4?
- threat
- 2.Sf3#
- 2.Qd6#
- 2.e3#
- 1...Rexf4
- 2.e3#
- 1...Qf5
- 2.Sf3#
- 2.e3#
- 1...Qg6
- 2.Sf3#
- 2.e3#
- 1...Qg8
- 2.Sf3#
- 2.Qxe4#
- 2.e3#
- 1...Qh1
- 2.Qd6#
- 2.Qxe4#
- 2.e3#
- 1...Qh5
- 2.Qxe4#
- 2.e3#
- 1...Qh6
- 2.Sf3#
- 2.Qxe4#
- 2.e3#
- 1...Qb7
- 2.Sf3#
- 2.e3#
- 1...Qc7
- 2.Sf3#
- 2.Qxe4#
- 2.e3#
- 1...Qd7
- 2.Sf3#
- 2.Qxe4#
- 2.e3#
- 1...Qe7
- 2.Sf3#
- 2.e3#
- 1...Qf7
- 2.Sf3#
- 2.Qxe4#
- 2.e3#
- 1...Rf5
- 2.Sf3#
- 2.Qxe4#
- 2.e3#
- 1...Rf6
- 2.Sf3#
- 2.e3#
- 1...Rd8
- 2.Sf3#
- 2.e3#
- 1...Sd2
- 2.Qd6#
- 2.c3#
- 2.e3#
- 1...Sc3
- 2.Sf3#
- 2.e3#
- 1...Rfxf4!
- threat
- 1.e3+?
- 1...fxe3
- 2.Se2#
- 1...Rxe3+!
- 1...fxe3
- 1.Qh5?
- Keys
- 1.Qg4!
- threat
- 2.Sf3#
- 1...Rxe2+
- 2.Sxe2#
- 1...fxg3
- 2.e3#
- 1...Qh1
- 2.Qd7#
- 1...Re3
- 2.fxe3#
- 1...Sd2
- 2.c3#
- 1...f3
- 2.e3#
- threat
- 1.Qg4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 18
- Sets
- Q(e);N_GUARD::QAR1(H),XR(c)
- Q(e);N_GUARD,P_PINS(B)::QAR1(H),XR(c)
- R(c);CHECK,XP(D)::S(B),XR(c)
- R(c);OGATE::QAR1(H)
- R(c);SBLOCK::R1(K)
- R(f);S_CUTQ(e)::QAR1(H),XR(c)
- S(a);N_GUARD::P(C)
- Tries
- Try
- Q(H);
- Threat
- DUALS(3)
- Vars
- R(c);CHECK,XP(D)::S(B),XR(c)
- Q(e);::S(B)
- R(f);::S(B)
- Refutation
- Q(e);XQ(H)
- Try
- Q(H);P_PINR(c),XP(d)
- Threat
- DUALS(3)
- Vars
- R(c);N_PINP(D),N_SPINR(c),XQ(H)::P(D)
- Refutation
- R(f);N_SPINR(c),XQ(H)
- Try
- P(D);CHECK
- Vars
- P(d);XP(D)::S(B)
- Refutation
- R(c);CHECK,XP(D)
- Try
- Actual
- Q(H);
- Threat
- S(B)
- Vars
- R(c);CHECK,P_SPINP(d),XP(D)::S(B),XR(c)
- P(d);N_GUARD,P_SPINR(c),XP(I)::P(D)
- Q(e);N_GUARD,P_PINS(B)::QAR(H)
- R(c);OGATE,P_SPINP(d)::P(E),XR(c)
- S(a);N_GUARD::P(C)
- P(d);N_GUARD,P_SPINR(c)::P(D)
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).