MESON Chess Problem Database
Problem Display
PID: 238312 (nrb5/2pP3q/2Q2p1N/p2P4/RpBkpP1R/N4P2/3P3B/1K2n3 w - - 0 1)
Segers, Marcel
64 Shakhmatnoe obozrenie, 1990
#2
13 + 11
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qf5
- 2.Sxf5#
- 1...Qg8
- 2.Sf5#
- 1...Qe7
- 2.Sf5#
- 1...Qf7
- 2.Sf5#
- 1...Qg7
- 2.Sf5#
- 1...Qh8
- 2.Sf5#
- 1...Rb5
- 2.Sxb5#
- 1...Bb7
- 2.Sb5#
- 1...Sc2
- 2.Sxc2#
- 1...Sg2
- 2.Sc2#
- 1...Sd3
- 2.Sc2#
- 1...Sxf3
- 2.Sc2#
- 1...Sb6
- 2.Sb5#
- 1...bxa3+
- 2.Bb5#
- 1...b3
- 2.Bb5#
- 1...exf3+
- 2.f5#
- 1...e3+
- 2.f5#
- 1...Qf5
- Tries
- 1.Bf1?
- threat
- 2.Qc4#
- 1...exf3+
- 2.f5#
- 1...e3+
- 2.f5#
- 1...Sb6
- 2.Sb5#
- 1...Ba6!
- threat
- 1.Be2?
- threat
- 2.Qc4#
- 1...exf3+
- 2.f5#
- 1...e3+
- 2.f5#
- 1...Sb6
- 2.Sb5#
- 1...Ba6!
- threat
- 1.Bb5?
- threat
- 2.Qc4#
- 1...exf3+
- 2.f5#
- 1...e3+
- 2.f5#
- 1...Sb6!
- threat
- 1.Rxa5?
- threat
- 2.Qc5#
- 2.Qxf6#
- 1...exf3+
- 2.f5#
- 1...e3+
- 2.f5#
- 1...Qxh6
- 2.Qc5#
- 1...Sxf3
- 2.Sc2#
- 2.Qc5#
- 1...Qf5
- 2.Sxf5#
- 2.Qc5#
- 1...Qg6
- 2.Qc5#
- 1...Qe7
- 2.Sf5#
- 1...Qf7
- 2.Sf5#
- 2.Qc5#
- 1...Qg7
- 2.Sf5#
- 2.Qc5#
- 1...Qh8
- 2.Sf5#
- 2.Qc5#
- 1...Rb5
- 2.Sxb5#
- 1...Rb6
- 2.Qc5#
- 1...Sd3
- 2.Sc2#
- 1...f5
- 2.Qc5#
- 2.Qf6#
- 1...bxa3+!
- threat
- 1.f5?
- threat
- 2.Rxe4#
- 1...bxa3+
- 2.Bb5#
- 1...Qxf5
- 2.Sxf5#
- 1...Sxf3
- 2.Sc2#
- 1...Qe7!
- threat
- 1.Bf1?
- Keys
- 1.d6!
- threat
- 2.Qd5#
- 1...bxa3+
- 2.Bb5#
- 1...exf3+
- 2.f5#
- 1...e3+
- 2.f5#
- 1...Qf5
- 2.Sxf5#
- 1...Qg8
- 2.Sf5#
- 1...Qf7
- 2.Sf5#
- 1...Rb5
- 2.Sxb5#
- 1...Bb7
- 2.Sb5#
- 1...Sb6
- 2.Sb5#
- threat
- 1.d6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 8
- Sets
- Q(h);N_GUARD::S(L),XQ(h)
- Q(h);N_GUARD::S(L)
- R(j);N_GUARD::S(D),XR(j)
- B(k);S_CUTR(j)::S(D)
- S(a);N_GUARD::S(D),XS(a)
- S(a);N_GUARD::S(D)
- S(a);N_GUARD,XP(E)::S(D)
- S(i);S_CUTR(j)::S(D)
- P(b);CHECK,OGATEB,XS(D)::R(F)+B(G)
- P(b);OGATEB::R(F)+B(G)
- P(d);CHECK,XP(E)::R(I)+P(H)
- P(d);CHECK::R(I)+P(H)
- Tries
- Try
- B(G);P_PINP(b)
- Threat
- QAR1(K)
- Vars
- P(d);CHECK,XP(E)::R(I)+P(H)
- P(d);CHECK::R(I)+P(H)
- S(i);S_CUTR(j)::S(D)
- Refutation
- B(k);
- Try
- B(G);P_PINP(b)
- Threat
- QAR1(K)
- Vars
- P(d);CHECK,XP(E)::R(I)+P(H)
- P(d);CHECK::R(I)+P(H)
- S(i);S_CUTR(j)::S(D)
- Refutation
- B(k);
- Try
- B(G);P_PINP(b)
- Threat
- QAR1(K)
- Vars
- P(d);CHECK,XP(E)::R(I)+P(H)
- P(d);CHECK::R(I)+P(H)
- Refutation
- S(i);
- Try
- R(F);XP(e)
- Threat
- DUALS(2)
- Vars
- P(d);CHECK,XP(E)::R(I)+P(H)
- P(d);CHECK::R(I)+P(H)
- Q(h);XS(L)::QAB1(K)
- Q(h);::QAB1(K)
- Q(h);N_GUARD::S(L)
- R(j);N_GUARD::S(D),XR(j)
- R(j);::QAB1(K)
- S(a);N_GUARD::S(D)
- Refutation
- P(b);CHECK,XS(D)
- Try
- P(H);P_PINP(d)
- Threat
- R1(I),XP(d)
- Vars
- P(b);CHECK,OGATEB,XS(D)::R(F)+B(G)
- Q(h);XP(H)::S(L),XQ(h)
- S(a);N_GUARD,XP(E)::S(D)
- Refutation
- Q(h);
- Try
- Actual
- P(J);
- Threat
- QAR1(K)
- Vars
- P(b);CHECK,OGATEB,XS(D)::R(F)+B(G)
- P(d);CHECK,XP(E)::R(I)+P(H)
- P(d);CHECK::R(I)+P(H)
- Q(h);N_GUARD::S(L),XQ(h)
- Q(h);N_GUARD::S(L)
- R(j);N_GUARD::S(D),XR(j)
- B(k);S_CUTR(j)::S(D)
- S(i);S_CUTR(j)::S(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).