MESON Chess Problem Database
Problem Display
PID: 135214 (4R3/4Q1K1/8/3pN3/2pqkBB1/1N1pP3/1r4b1/3n4 w - - 0 1)
Rothwell, Stephen
Badische Neueste Nachrichten, 1999
#2
8 + 8
| 14503 | Problemschach-Jahrbuch (1999) | 2000 |
SOLUTION
- SOUND
- Sets
- 1...Qc3
- 2.Sc5#
- 1...Qxe3
- 2.Sg6#
- 1...Qc5
- 2.Sxc5#
- 1...Qxe5+
- 2.Qxe5#
- 1...Qb6
- 2.Sc6#
- 1...Qa7
- 2.Sd7#
- 1...Rb1
- 2.Sd2#
- 1...Rd2
- 2.Sxd2#
- 1...Qc3
- Tries
- 1.Kf6?
- threat
- 2.Bf5#
- 2.Qh7#
- 1...Qxe5+
- 2.Qxe5#
- 1...Qb6+
- 2.Sc6#
- 1...Qxe3
- 2.Sg6#
- 1...Qa7
- 2.Sd7#
- 2.Bf5#
- 1...Bh3
- 2.Bf3#
- 2.Qh7#
- 1...Sxe3!
- threat
- 1.Kh6?
- threat
- 2.Qh7#
- 1...Qb6+
- 2.Sc6#
- 1...Qxe3
- 2.Sg6#
- 1...Qa7
- 2.Sd7#
- 1...Sxe3!
- threat
- 1.Kf8?
- threat
- 2.Qh7#
- 1...Qxe3
- 2.Sg6#
- 1...Qc5
- 2.Sxc5#
- 1...Qb6
- 2.Sc6#
- 1...Qa7
- 2.Sd7#
- 1...Sxe3!
- threat
- 1.Kg8?
- threat
- 2.Qh7#
- 1...Qxe3
- 2.Sg6#
- 1...Qb6
- 2.Sc6#
- 1...Qa7
- 2.Sd7#
- 1...Sxe3!
- threat
- 1.Kh8?
- threat
- 2.Qh7#
- 1...Qxe5+
- 2.Qxe5#
- 1...Qxe3
- 2.Sg6#
- 1...Qb6
- 2.Sc6#
- 1...Qa7
- 2.Sd7#
- 1...Sxe3!
- threat
- 1.Sxd4?
- threat
- 2.Sef3#
- 2.Sxc4#
- 2.Sec6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 2.Bf5#
- 1...Rb6
- 2.Sec6#
- 2.Bf5#
- 1...Rb7
- 2.Sd7#
- 2.Bf5#
- 1...Bf3
- 2.Sexf3#
- 2.Sxc4#
- 2.Sec6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 2.Bxf3#
- 2.Bf5#
- 1...Bh3
- 2.Sef3#
- 2.Sxc4#
- 2.Sec6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 2.Bf3#
- 1...d2
- 2.Bf5#
- 1...c3
- 2.Sef3#
- 2.Sc4#
- 2.Sec6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 2.Bf5#
- 1...Sxe3!
- threat
- 1.Bf3+?
- 1...Kf5
- 2.Sxd4#
- 2.Rf8#
- 2.Qg5#
- 2.Qf6#
- 2.Qf8#
- 2.Qe6#
- 2.Qd7#
- 2.Qf7#
- 1...Bxf3!
- 1...Kf5
- 1.Rf8?
- threat
- 2.Bf5#
- 1...Qxe5+
- 2.Qxe5#
- 1...Qxe3
- 2.Sf3#
- 2.Sxc4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 1...Bh3
- 2.Bf3#
- 1...Sxe3!
- threat
- 1.Qh4?
- threat
- 2.Qh7#
- 1...Qxe5+
- 2.Rxe5#
- 1...Qa7+
- 2.Sd7#
- 1...Qxe3
- 2.Sg6#
- 1...Qb6
- 2.Sc6#
- 1...Sxe3!
- threat
- 1.Qc5?
- threat
- 2.Qxd4#
- 1...Qxe5+
- 2.Rxe5#
- 1...Qxe3
- 2.Sg6#
- 1...Qxc5
- 2.Sxc5#
- 1...Qc3!
- threat
- 1.Qg5?
- threat
- 2.Bf5#
- 2.Qf5#
- 2.Qg6#
- 1...Qxe5+
- 2.Rxe5#
- 2.Qxe5#
- 1...Qa7+
- 2.Sd7#
- 1...Qxe3
- 2.Sf3#
- 2.Sxc4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 2.Bf5#
- 2.Qf5#
- 1...Qb6
- 2.Sc6#
- 2.Bf5#
- 2.Qf5#
- 1...Bh3
- 2.Bf3#
- 2.Qf5#
- 2.Qg6#
- 1...Sxe3!
- threat
- 1.Qd6?
- threat
- 2.Qg6#
- 1...Qxe5+
- 2.Rxe5#
- 2.Qxe5#
- 1...Qa7+
- 2.Sd7#
- 1...Qxe3
- 2.Sf3#
- 2.Sxc4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 1...Qb6
- 2.Sf3#
- 2.Sxc4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 1...Sxe3!
- threat
- 1.Qf6?
- threat
- 2.Bf5#
- 2.Qf5#
- 2.Qg6#
- 1...Qa7+
- 2.Sd7#
- 1...Qxe3
- 2.Sf3#
- 2.Sxc4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 2.Qf5#
- 1...Qxe5
- 2.Sc5#
- 2.Rxe5#
- 2.Qxe5#
- 1...Qb6
- 2.Sc6#
- 2.Bf5#
- 2.Qf5#
- 1...Bh3
- 2.Bf3#
- 2.Qf5#
- 2.Qg6#
- 1...Sxe3!
- threat
- 1.Qf8?
- threat
- 2.Bf5#
- 2.Qf5#
- 1...Qxe5+
- 2.Rxe5#
- 1...Qa7+
- 2.Sd7#
- 1...Qxe3
- 2.Sf3#
- 2.Sxc4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Qf5#
- 1...Bh3
- 2.Bf3#
- 2.Qf5#
- 1...Sxe3!
- threat
- 1.Qe6?
- threat
- 2.Bf5#
- 2.Qf5#
- 2.Qg6#
- 1...Qxe5+
- 2.Qxe5#
- 1...Qa7+
- 2.Sd7#
- 2.Sf7#
- 1...Qxe3
- 2.Sg6#
- 2.Qf5#
- 1...Qb6
- 2.Sc6#
- 2.Bf5#
- 2.Qf5#
- 1...Bh3
- 2.Bf3#
- 2.Qf5#
- 2.Qg6#
- 1...Sxe3!
- threat
- 1.Qd7?
- threat
- 2.Bf5#
- 2.Qf5#
- 1...Qxe5+
- 2.Rxe5#
- 1...Qxe3
- 2.Sg6#
- 2.Qf5#
- 1...Qa7
- 2.Sf3#
- 2.Sxc4#
- 2.Sc6#
- 2.Sg6#
- 2.Sf7#
- 2.Bf5#
- 1...Bh3
- 2.Bf3#
- 2.Qf5#
- 1...Sxe3!
- threat
- 1.Qf7?
- threat
- 2.Bf5#
- 2.Qg6#
- 2.Qf5#
- 1...Qxe5+
- 2.Rxe5#
- 1...Qxe3
- 2.Sf3#
- 2.Sxc4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Qf5#
- 1...Qb6
- 2.Sc6#
- 2.Bf5#
- 2.Qf5#
- 1...Qa7
- 2.Sd7#
- 2.Bf5#
- 1...Bh3
- 2.Bf3#
- 2.Qg6#
- 2.Qf5#
- 1...Sxe3!
- threat
- 1.Kf6?
- Keys
- 1.Qa7!
- threat
- 2.Qxd4#
- 1...Qxe5+
- 2.Rxe5#
- 1...Qxa7+
- 2.Sd7#
- 1...Qxe3
- 2.Sg6#
- 1...Qc3
- 2.Sc5#
- 1...Qc5
- 2.Sxc5#
- 1...Qb6
- 2.Sc6#
- threat
- 1.Qa7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 2
- Sets
- Q(f);N_GUARD::S(A)
- Q(f);N_PINS(E),XP(B)::QAR(F)+S(E)
- Q(f);N_GUARD,N_PINS(E)::S(A),XQ(f)
- Q(f);CHECK,OGATE,P_SPINQ(f),XS(E)::QAR1(F),XQ(f)
- Q(f);N_PINS(E)::QAR(F)+S(E)
- Q(f);N_PINS(E),P_PINQ(F)::QAR(F)+S(E)
- R(b);N_GUARD::S(A)
- R(b);N_GUARD::S(A),XR(b)
- Tries
- Try
- K(G);S_FLIGHT
- Threat
- DUALS(2)
- Vars
- Q(f);CHECK,OGATE,P_SPINQ(f),XS(E)::QAR1(F),XQ(f)
- Q(f);CHECK,N_PINS(E)::QAR(F)+S(E)
- Q(f);N_PINS(E),XP(B)::QAR(F)+S(E)
- Refutation
- S(a);XP(B)
- Try
- K(G);N_SPINS(E),S_FLIGHT
- Threat
- QAB(F)
- Vars
- Q(f);CHECK,N_GUARD::QAR(F)+S(E)
- Q(f);N_GUARD,P_PINB(C),XP(B)::QAR(F)+S(E)
- Q(f);N_GUARD::QAR(F)+S(E)
- Refutation
- S(a);XP(B)
- Try
- K(G);N_SPINS(E),S_FLIGHT
- Threat
- QAB(F)
- Vars
- Q(f);N_GUARD,XP(B)::QAR(F)+S(E)
- Q(f);N_GUARD,P_PINQ(F)::S(A),XQ(f)
- Q(f);N_GUARD::QAR(F)+S(E)
- Refutation
- S(a);XP(B)
- Try
- K(G);N_SPINS(E),P-FLIGHT
- Threat
- QAB(F)
- Vars
- Q(f);N_GUARD,XP(B)::QAR(F)+S(E)
- Q(f);N_GUARD::QAR(F)+S(E)
- Refutation
- S(a);XP(B)
- Try
- K(G);S_FLIGHT
- Threat
- QAB(F)
- Vars
- Q(f);CHECK,OGATE,P_SPINQ(f),XS(E)::QAR1(F),XQ(f)
- Q(f);N_PINS(E),XP(B)::QAR(F)+S(E)
- Q(f);N_PINS(E)::QAR(F)+S(E)
- Refutation
- S(a);XP(B)
- Try
- S(A);N_SPINS(E),XQ(f)
- Threat
- DUALS(7)
- Vars
- P(d);::B(D)
- Refutation
- S(a);XP(B)
- Try
- B(D);CHECK
- Refutation
- B(c);XB(D)
- Try
- R(H);
- Threat
- B(D)
- Vars
- Q(f);CHECK,OGATE,P_SPINQ(f),XS(E)::QAR1(F),XQ(f)
- B(c);N_GUARD::B(D)
- Refutation
- S(a);XP(B)
- Try
- Q(F);
- Threat
- QAB(F)
- Vars
- Q(f);CHECK,OGATE,P_SPINQ(f),XS(E)::R1(H),XQ(f)
- Q(f);CHECK,N_PINS(E)::R(H)+S(E)
- Q(f);N_PINS(E),XP(B)::R(H)+S(E)
- Q(f);N_PINS(E)::R(H)+S(E)
- Refutation
- S(a);XP(B)
- Try
- Q(F);
- Threat
- QAR1(F),XQ(f)
- Vars
- Q(f);CHECK,OGATE,P_SPINQ(f),XS(E)::R1(H),XQ(f)
- Q(f);N_PINS(E),XP(B)::R(H)+S(E)
- Q(f);N_PINS(E),XQ(F)::S(A),XQ(f)
- Refutation
- Q(f);
- Try
- Q(F);
- Threat
- DUALS(3)
- Vars
- Q(f);CHECK,N_PINS(E)::R(H)+S(E)
- Refutation
- S(a);XP(B)
- Try
- Q(F);
- Threat
- QAB(F)
- Vars
- Q(f);CHECK,N_PINS(E)::R(H)+S(E)
- Refutation
- S(a);XP(B)
- Try
- Q(F);N_SPINS(E)
- Threat
- DUALS(3)
- Vars
- Q(f);CHECK,N_GUARD::R(H)+S(E)
- Refutation
- S(a);XP(B)
- Try
- Q(F);
- Threat
- DUALS(2)
- Vars
- Q(f);CHECK,OGATE,P_SPINQ(f),XS(E)::R1(H),XQ(f)
- Q(f);CHECK,N_PINS(E)::R(H)+S(E)
- Refutation
- S(a);XP(B)
- Try
- Q(F);
- Threat
- DUALS(3)
- Vars
- Q(f);CHECK,OGATE,P_SPINQ(f),XS(E)::QAR1(F),XQ(f)
- Refutation
- S(a);XP(B)
- Try
- Q(F);
- Threat
- DUALS(2)
- Vars
- Q(f);CHECK,OGATE,P_SPINQ(f),XS(E)::R1(H),XQ(f)
- Refutation
- S(a);XP(B)
- Try
- Q(F);
- Threat
- DUALS(3)
- Vars
- Q(f);CHECK,OGATE,P_SPINQ(f),XS(E)::R1(H),XQ(f)
- Refutation
- S(a);XP(B)
- Try
- Actual
- Q(F);
- Threat
- QAR1(F),XQ(f)
- Vars
- Q(f);CHECK,OGATE,P_SPINQ(f),XS(E)::R1(H),XQ(f)
- Q(f);CHECK,N_PINS(E),XQ(F)::R(H)+S(E)
- Q(f);N_PINS(E),XP(B)::R(H)+S(E)
- Q(f);N_GUARD::S(A)
- Q(f);N_GUARD,N_PINS(E)::S(A),XQ(f)
- Q(f);N_PINS(E)::R(H)+S(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).