MESON Chess Problem Database
Problem Display
PID: 9910 (1b3K2/7B/2nP2RP/rb2Nk2/4pB2/2Q1p1p1/2n3Nq/5R2 w - - 0 1)
Mansfield, Comins
Comm., Sahovski Glasnik, 1960
#2
10 + 10
| 3550 | Complete Mansfield/II | 1997 |
SOLUTION
- SOUND
- Sets
- 1...Qg1
- 2.Sh4#
- 1...Qh4
- 2.Sxh4#
- 1...Qxh6+
- 2.Rxh6#
- 1...Ba4
- 2.Bxe3#
- 2.Bxg3#
- 2.Bg5#
- 1...Bxd6+
- 2.Rxd6#
- 1...Sa1
- 2.Sxe3#
- 1...Se1
- 2.Sxe3#
- 1...Sa3
- 2.Sxe3#
- 1...S2b4
- 2.Sxe3#
- 1...S2d4
- 2.Sxe3#
- 1...Sxe5
- 2.Qxe5#
- 1...Qg1
- Tries
- 1.Kg7?
- threat
- 2.Rf6#
- 1...Qxh6+
- 2.Rxh6#
- 1...Sxe5
- 2.Qxe5#
- 1...Ra7+!
- threat
- 1.Sd3?
- threat
- 2.Bxe3#
- 2.Bxg3#
- 2.Be5#
- 2.Qf6#
- 1...Qxh6+
- 2.Bxh6#
- 1...Bxd6+
- 2.Bxd6#
- 1...Qxg2
- 2.Qf6#
- 1...Bxd3
- 2.Qf6#
- 1...Qg1
- 2.Sh4#
- 2.Qf6#
- 1...Qh1
- 2.Qf6#
- 1...Qh4
- 2.Sxh4#
- 1...Qh5
- 2.Qf6#
- 1...Ra1
- 2.Qf6#
- 1...Se1
- 2.Sxe3#
- 2.Qf6#
- 1...S2d4
- 2.Sxe3#
- 1...S6d4
- 2.Qc5#
- 1...Se5
- 2.Bxe5#
- 2.Qxe5#
- 1...e2
- 2.Qf6#
- 1...exd3!
- threat
- 1.Sc4?
- threat
- 2.Bxe3#
- 2.Bxg3#
- 2.Be5#
- 2.Qf6#
- 1...Qxh6+
- 2.Bxh6#
- 1...Bxd6+
- 2.Sxd6#
- 2.Bxd6#
- 1...Qxg2
- 2.Qf6#
- 1...Bxc4
- 2.Qf6#
- 1...Qg1
- 2.Sh4#
- 2.Qf6#
- 1...Qh1
- 2.Qf6#
- 1...Qh4
- 2.Sxh4#
- 1...Qh5
- 2.Qf6#
- 1...Ra1
- 2.Qf6#
- 1...Se1
- 2.Sgxe3#
- 2.Scxe3#
- 2.Qf6#
- 1...S2d4
- 2.Sgxe3#
- 2.Scxe3#
- 1...Se5
- 2.Bxe5#
- 2.Qxe5#
- 1...e2
- 2.Qf6#
- 1...S6d4!
- threat
- 1.Sg4?
- threat
- 2.Qf6#
- 1...Qxh6+
- 2.Sxh6#
- 1...Qh4
- 2.Sxh4#
- 1...S2d4
- 2.S2xe3#
- 2.S4xe3#
- 1...S6d4
- 2.Qc5#
- 1...Se5
- 2.Qxe5#
- 1...Bxd6+!
- threat
- 1.Qb3?
- threat
- 2.Re6#
- 2.Qe6#
- 2.Qf7#
- 1...Qxh6+
- 2.Rxh6#
- 1...Bxd6+
- 2.Rxd6#
- 1...Sxe5
- 2.Qe6#
- 1...Qh4
- 2.Sxh4#
- 2.Re6#
- 2.Qe6#
- 1...Qh5
- 2.Qe6#
- 2.Qf7#
- 1...Ra7
- 2.Qe6#
- 1...S2d4
- 2.Sxe3#
- 2.Re6#
- 2.Qf7#
- 1...S6d4
- 2.Re6#
- 2.Qf7#
- 1...Se7
- 2.Qe6#
- 2.Qf7#
- 1...Sd8
- 2.Re6#
- 1...Bc4!
- threat
- 1.Qc4?
- threat
- 2.Bxg3#
- 2.Re6#
- 2.Qe6#
- 2.Qf7#
- 1...Qxh6+
- 2.Rxh6#
- 1...Bxd6+
- 2.Rxd6#
- 1...Qxg2
- 2.Re6#
- 2.Qe6#
- 2.Qf7#
- 1...Sxe5
- 2.Qe6#
- 1...Qg1
- 2.Sh4#
- 2.Re6#
- 2.Qe6#
- 2.Qf7#
- 1...Qh1
- 2.Re6#
- 2.Qe6#
- 2.Qf7#
- 1...Qh4
- 2.Sxh4#
- 2.Re6#
- 2.Qe6#
- 1...Qh5
- 2.Qe6#
- 2.Qf7#
- 1...Ra1
- 2.Re6#
- 2.Qe6#
- 2.Qf7#
- 1...Ra7
- 2.Bxg3#
- 2.Qe6#
- 1...Se1
- 2.Sxe3#
- 2.Re6#
- 2.Qe6#
- 2.Qf7#
- 1...S2d4
- 2.Sxe3#
- 2.Re6#
- 2.Qf7#
- 1...S6d4
- 2.Re6#
- 2.Qf7#
- 1...Se7
- 2.Bxg3#
- 2.Qe6#
- 2.Qf7#
- 1...Sd8
- 2.Bxg3#
- 2.Re6#
- 1...e2
- 2.Re6#
- 2.Qe6#
- 2.Qf7#
- 1...Bxc4!
- threat
- 1.Kg7?
- Keys
- 1.Sf7!
- threat
- 2.Qf6#
- 1...Qxh6+
- 2.Sxh6#
- 1...Bxd6+
- 2.Sxd6#
- 1...Qh4
- 2.Sxh4#
- 1...S2d4
- 2.Sxe3#
- 1...S6d4
- 2.Qc5#
- 1...Se5
- 2.Qxe5#
- threat
- 1.Sf7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 5
- Sets
- Q(b);N_GUARD::S(B)
- Q(b);N_GUARD::S(B),XQ(b)
- Q(b);CHECK,OGATE,XP(H)::B(I)+R(G),XQ(b)
- B(j);CHECK,OGATE,XP(F)::B(I)+R(G),XB(j)
- S(a);N_GUARD::S(B),XP(c)
- S(i);OGATE,XS(E)::QAR1(C),XS(i)
- Tries
- Try
- K(J);S_FLIGHT
- Threat
- B(I)+R(G),DCHECK
- Vars
- Q(b);CHECK,OGATE,XP(H)::B(I)+R(G),XQ(b)
- S(i);OGATE,XS(E)::QAR1(C),XS(i)
- Refutation
- R(f);CHECK
- Try
- S(E);
- Threat
- DUALS(4)
- Vars
- Q(b);CHECK,OGATE,XP(H)::R(A)+B(D),XQ(b)
- B(j);CHECK,OGATE,XP(F)::R(A)+B(D),XB(j)
- Q(b);XS(B)::QAR1(C)
- B(g);XS(E)::QAR1(C)
- Q(b);::QAR1(C)
- Q(b);N_GUARD::S(B),XQ(b)
- R(f);::QAR1(C)
- S(a);N_GUARD::S(B),XP(c)
- S(i);N_GUARD::QAR(C)
- P(c);::QAR1(C)
- Refutation
- P(e);XS(E)
- Try
- S(E);
- Threat
- DUALS(4)
- Vars
- Q(b);CHECK,OGATE,XP(H)::R(A)+B(D),XQ(b)
- Q(b);XS(B)::QAR1(C)
- B(g);XS(E)::QAR1(C)
- Q(b);::QAR1(C)
- Q(b);N_GUARD::S(B),XQ(b)
- R(f);::QAR1(C)
- P(c);::QAR1(C)
- Refutation
- S(i);
- Try
- S(E);
- Threat
- QAR1(C)
- Vars
- Q(b);CHECK,XP(H)::S(E),XQ(b)
- Q(b);N_GUARD::S(B),XQ(b)
- S(i);N_GUARD::QAR(C)
- S(i);N_GUARD::QAR1(C),XS(i)
- Refutation
- B(j);CHECK,XP(F)
- Try
- Q(C);
- Threat
- DUALS(3)
- Vars
- Q(b);CHECK,OGATE,XP(H)::B(I)+R(G),XQ(b)
- B(j);CHECK,OGATE,XP(F)::B(I)+R(G),XB(j)
- S(i);XS(E)::QAB1(C)
- R(f);::QAB1(C)
- S(i);::B(I)+R(G)
- Refutation
- B(g);
- Try
- Q(C);
- Threat
- DUALS(4)
- Vars
- Q(b);CHECK,OGATE,XP(H)::B(I)+R(G),XQ(b)
- B(j);CHECK,OGATE,XP(F)::B(I)+R(G),XB(j)
- S(i);XS(E)::QAB1(C)
- Refutation
- B(g);XQ(C)
- Try
- Actual
- S(E);
- Threat
- QAR1(C)
- Vars
- Q(b);CHECK,XP(H)::S(E),XQ(b)
- B(j);CHECK,XP(F)::S(E),XB(j)
- Q(b);N_GUARD::S(B),XQ(b)
- S(a);N_GUARD::S(B),XP(c)
- S(i);N_GUARD::QAR(C)
- S(i);N_GUARD::QAR1(C),XS(i)
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).