MESON Chess Problem Database
Problem Display
PID: 49957 (1q1r4/r7/B7/1PbR2Q1/2k2N1n/p7/NR6/3K2B1 w - - 0 1)
Mansfield, Comins
Comm., Het Belgisch Schaakbord (L'Echiquier Belge), 1981-1982
#2
9 + 7
| 4054 | Complete Mansfield/III | 1999 |
| 5110 | Bekroonde Problemen | 2002 |
SOLUTION
- SOUND
- Sets
- 1...Qxb5
- 2.Bxb5#
- 1...Rb7
- 2.b6#
- 1...Rc7
- 2.b6#
- 1...Rad7
- 2.b6#
- 1...Re7
- 2.b6#
- 1...Rf7
- 2.b6#
- 1...Rg7
- 2.b6#
- 1...Rh7
- 2.b6#
- 1...Rxd5+
- 2.Qxd5#
- 1...Re8
- 2.Rxc5#
- 1...Rf8
- 2.Rxc5#
- 1...Rg8
- 2.Rxc5#
- 1...Rh8
- 2.Rxc5#
- 1...Bxg1
- 2.Rb4#
- 1...Bf2
- 2.Rb4#
- 1...Be3
- 2.Rb4#
- 1...Bb4
- 2.Rxb4#
- 1...Bd4
- 2.Rb4#
- 1...Bb6
- 2.Rb4#
- 1...Bd6
- 2.Rd4#
- 1...Qxb5
- Tries
- 1.Bxc5?
- threat
- 2.Rb4#
- 1...Rxd5+
- 2.Qxd5#
- 1...axb2!
- threat
- 1.Rd4+?
- 1...Bxd4
- 2.Rb4#
- 1...Rxd4+!
- 1...Bxd4
- 1.Qe5?
- threat
- 2.Qc3#
- 2.Qe2#
- 1...Rxd5+
- 2.Qxd5#
- 1...axb2
- 2.Qc3#
- 1...Re7
- 2.Qc3#
- 2.b6#
- 1...Re8
- 2.Rxc5#
- 2.Qc3#
- 1...Be3
- 2.Rb4#
- 2.Qc3#
- 1...Bb4
- 2.Rxb4#
- 2.Qd4#
- 2.Qe2#
- 2.Qe4#
- 1...Bd4
- 2.Rb4#
- 2.Qxd4#
- 2.Qe2#
- 1...Qxe5!
- threat
- 1.Qf5?
- threat
- 2.Qc2#
- 2.Qd3#
- 1...Rxd5+
- 2.Qxd5#
- 1...Qxf4
- 2.Qd3#
- 1...Qe5
- 2.Qd3#
- 1...Bb4
- 2.Rxb4#
- 2.Qd3#
- 2.Qe4#
- 1...Bd4
- 2.Rb4#
- 2.Qd3#
- 1...Sxf5!
- threat
- 1.Bxc5?
- Keys
- 1.Qg8!
- threat
- 2.Rd4#
- 1...Rxd5+
- 2.Qxd5#
- 1...Rxg8
- 2.Rxc5#
- 1...Bxg1
- 2.Rb4#
- 1...Rf7
- 2.b6#
- 1...Bf2
- 2.Rb4#
- 1...Be3
- 2.Rb4#
- 1...Bb4
- 2.Rxb4#
- 1...Bd4
- 2.Rb4#
- 1...Bb6
- 2.Rb4#
- 1...Bd6
- 2.Rc5#
- 1...Be7
- 2.Rxd8#
- 1...Bf8
- 2.Rd7#
- threat
- 1.Qg8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 10
- Sets
- Q(f);OGATE,P_SPINQ(f),XP(F)::B(I),XQ(f)
- R(e);N_GUARD::B(I)+P(F)
- R(g);CHECK,OGATE,XR(G)::QAB1(H),XR(g)
- R(g);N_PINR(G)::R1(G),XB(d)
- B(d);N_GUARD,XB(B)::R1(D)
- B(d);N_GUARD::R1(D)
- B(d);N_GUARD::R1(D),XB(d)
- B(d);N_GUARD,N_PINR(G)::R1(D)
- B(d);N_GUARD,N_PINR(G),S_CUTR(g)::R1(G)
- Tries
- Try
- B(B);XB(d)
- Threat
- R1(D)
- Vars
- R(g);CHECK,OGATE,XR(G)::QAB1(H),XR(g)
- Refutation
- P(a);XR(D)
- Try
- R(G);CHECK
- Vars
- B(d);XR(G)::R1(D)
- Refutation
- R(g);CHECK,XR(G)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- R(g);CHECK,OGATE,XR(G)::QAB1(H),XR(g)
- P(a);XR(D)::QAR1(H)
- Refutation
- Q(f);XQ(H)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- R(g);CHECK,OGATE,XR(G)::QAB1(H),XR(g)
- Q(f);XS(E)::QAB1(H)
- Q(f);::QAB1(H)
- Refutation
- S(c);XQ(H)
- Try
- Actual
- Q(H);
- Threat
- QAB(H)+R(G),DCHECK
- Vars
- R(g);CHECK,OGATE,P_SPINR(g),XR(G)::QAB1(H),XR(g)
- R(g);N_PINR(G),XQ(H)::R1(G),XB(d)
- B(d);N_GUARD,XB(B)::R1(D)
- R(e);N_GUARD::B(I)+P(F)
- B(d);N_GUARD::R1(D)
- B(d);N_GUARD::R1(D),XB(d)
- B(d);N_GUARD,N_PINR(G)::R1(D)
- B(d);N_PINR(G)::QAB(H)+R(G),DCHECK
- B(d);S_CUTR(e)::QAB(H)+R(G),XR(g)
- B(d);S_CUTR(g)::QAB(H)+R(G)
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).