MESON Chess Problem Database
Problem Display
PID: 177880 (8/3p2p1/3P1pRn/2Q4K/2P1pk2/5p2/p1B5/B7 w - - 0 1)
Groeneveld, Cornelis
Sahs (Latvia), 1983
#2
7 + 8
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Sg4
- 2.Rxg4#
- 1...Sf5
- 2.Rg4#
- 1...Sf7
- 2.Rg4#
- 1...Sg8
- 2.Rg4#
- 1...f2
- 2.Qxf2#
- 1...e3
- 2.Qd4#
- 1...f5
- 2.Be5#
- 1...Sg4
- Tries
- 1.Kh4?
- 1...f2
- 2.Qxf2#
- 1...Sg4
- 2.Rxg4#
- 1...Sf7
- 2.Rg4#
- 1...Sg8
- 2.Rg4#
- 1...e3
- 2.Qd4#
- 1...f5
- 2.Be5#
- 1...Sf5+!
- 1...f2
- 1.Bd4?
- threat
- 2.Be3#
- 1...Sg4
- 2.Rxg4#
- 1...Sf5
- 2.Rg4#
- 1...e3
- 2.Bxe3#
- 1...f2!
- threat
- 1.Bxf6?
- threat
- 2.Qg5#
- 1...Sg4
- 2.Rxg4#
- 1...f2
- 2.Qxf2#
- 1...Sf5
- 2.Be5#
- 2.Rg4#
- 1...Sf7
- 2.Rg4#
- 1...gxf6!
- threat
- 1.Bd1?
- 1...Sg4
- 2.Rxg4#
- 1...Sf5
- 2.Rg4#
- 1...Sf7
- 2.Rg4#
- 1...Sg8
- 2.Rg4#
- 1...f2
- 2.Qxf2#
- 1...f5
- 2.Be5#
- 1...e3!
- 1...Sg4
- 1.Bb3?
- 1...Sg4
- 2.Rxg4#
- 1...f2
- 2.Qxf2#
- 1...Sf5
- 2.Rg4#
- 1...Sf7
- 2.Rg4#
- 1...Sg8
- 2.Rg4#
- 1...f5
- 2.Be5#
- 1...e3!
- 1...Sg4
- 1.Bd3?
- 1...Sg4
- 2.Rxg4#
- 1...f2
- 2.Qxf2#
- 1...Sf5
- 2.Rg4#
- 1...Sf7
- 2.Rg4#
- 1...Sg8
- 2.Rg4#
- 1...e3
- 2.Qd4#
- 1...f5
- 2.Be5#
- 1...exd3!
- 1...Sg4
- 1.Ba4?
- 1...Sg4
- 2.Rxg4#
- 1...f2
- 2.Qxf2#
- 1...Sf5
- 2.Rg4#
- 1...Sf7
- 2.Rg4#
- 1...Sg8
- 2.Rg4#
- 1...f5
- 2.Be5#
- 1...e3!
- 1...Sg4
- 1.Rg5?
- 1...fxg5
- 2.Qxg5#
- 1...Sg4
- 2.Rxg4#
- 1...f2
- 2.Qxf2#
- 1...Sf5
- 2.Rg4#
- 1...Sf7
- 2.Rg4#
- 1...Sg8
- 2.Rg4#
- 1...e3
- 2.Qd4#
- 1...f5
- 2.Be5#
- 1...g6+!
- 1...fxg5
- 1.Qe3+?
- 1...Kf5
- 2.Qxe4#
- 1...Kxe3!
- 1...Kf5
- 1.Kh4?
- Keys
- 1.Rxg7!
- 1...Sg4
- 2.Rxg4#
- 1...f2
- 2.Qxf2#
- 1...Sf5
- 2.Rg4#
- 1...Sf7
- 2.Rg4#
- 1...Sg8
- 2.Rg4#
- 1...e3
- 2.Qd4#
- 1...f5
- 2.Be5#
- 1...Sg4
- 1.Rxg7!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- S(f);N_GUARD::R1(G),XS(f)
- S(f);N_GUARD::R1(G)
- P(b);OGATEB::QAR2(D),XP(b)
- P(c);OGATEB::QAR2(D)
- P(e);N_GUARD,SBLOCK::B(A)
- Tries
- Try
- K(E);P-FLIGHT
- Vars
- P(b);OGATEB::QAR2(D),XP(b)
- S(f);N_GUARD::R1(G),XS(f)
- S(f);N_GUARD::R1(G)
- P(c);OGATEB::QAR2(D)
- P(e);N_GUARD,SBLOCK::B(A)
- Refutation
- S(f);CHECK
- Try
- B(A);
- Threat
- B(A)
- Vars
- S(f);N_GUARD::R1(G),XS(f)
- S(f);N_GUARD::R1(G)
- P(c);::B(A),XP(c)
- Refutation
- P(b);
- Try
- B(A);XP(e)
- Threat
- QAB1(D)
- Vars
- S(f);N_GUARD::R1(G),XS(f)
- P(b);OGATEB::QAR2(D),XP(b)
- S(f);N_GUARD::R1(G)
- Refutation
- P(h);XB(A)
- Try
- B(B);
- Vars
- S(f);N_GUARD::R1(G),XS(f)
- S(f);N_GUARD::R1(G)
- P(b);OGATEB::QAR2(D),XP(b)
- P(e);N_GUARD,SBLOCK::B(A)
- Refutation
- P(c);
- Try
- B(B);
- Vars
- S(f);N_GUARD::R1(G),XS(f)
- P(b);OGATEB::QAR2(D),XP(b)
- S(f);N_GUARD::R1(G)
- P(e);N_GUARD,SBLOCK::B(A)
- Refutation
- P(c);
- Try
- B(B);
- Vars
- S(f);N_GUARD::R1(G),XS(f)
- P(b);OGATEB::QAR2(D),XP(b)
- S(f);N_GUARD::R1(G)
- P(c);OGATEB::QAR2(D)
- P(e);N_GUARD,SBLOCK::B(A)
- Refutation
- P(c);XB(B)
- Try
- B(B);
- Vars
- S(f);N_GUARD::R1(G),XS(f)
- P(b);OGATEB::QAR2(D),XP(b)
- S(f);N_GUARD::R1(G)
- P(e);N_GUARD,SBLOCK::B(A)
- Refutation
- P(c);
- Try
- R(G);
- Vars
- P(e);OGATE,XR(G)::QAB1(D),XP(e)
- S(f);N_GUARD::R1(G),XS(f)
- P(b);OGATEB::QAR2(D),XP(b)
- S(f);N_GUARD::R1(G)
- P(c);OGATEB::QAR2(D)
- P(e);N_GUARD::B(A)
- Refutation
- P(h);CHECK
- Try
- Q(D);CHECK
- Vars
- K(d);P-FLIGHT,P_SPINP(c)::QAB1(D),XP(c)
- Refutation
- K(d);S_FLIGHT,XQ(D)
- Try
- Actual
- R(G);XP(h)
- Vars
- S(f);N_GUARD::R1(G),XS(f)
- P(b);OGATEB::QAR2(D),XP(b)
- S(f);N_GUARD::R1(G)
- P(c);OGATEB::QAR2(D)
- P(e);N_GUARD,SBLOCK::B(A)
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).