MESON Chess Problem Database
Problem Display
PID: 6637 (4R3/Bn1b4/7q/b1r1p3/RP1k4/1B1NNP2/3K1P2/8 w - - 0 1)
Mari, Alberto
3rd Prize, La Settimana Enigmistica, 1932
#2
10 + 7
| 5862 | An ABC of Chess Problems | 1970 |
SOLUTION
- SOUND
- Sets
- 1...Qxe3+
- 2.fxe3#
- 1...Qg7
- 2.Sc2#
- 1...Qf8
- 2.Sc2#
- 1...Qh1
- 2.Sc2#
- 1...Qh2
- 2.Sc2#
- 1...Qh3
- 2.Sc2#
- 1...Qh4
- 2.Sc2#
- 1...Qh5
- 2.Sc2#
- 1...Qa6
- 2.Sc2#
- 1...Qc6
- 2.Sc2#
- 1...Qd6
- 2.Sc2#
- 1...Qe6
- 2.Sc2#
- 1...Qf6
- 2.Sc2#
- 1...Qg6
- 2.Sc2#
- 1...Qh7
- 2.Sc2#
- 1...Qh8
- 2.Sc2#
- 1...Bxb4+
- 2.Rxb4#
- 1...Bc7
- 2.b5#
- 1...Bd8
- 2.b5#
- 1...Bh3
- 2.bxa5#
- 1...Bg4
- 2.bxa5#
- 1...Bf5
- 2.bxa5#
- 1...Bc8
- 2.bxa5#
- 1...Sd6
- 2.Bxc5#
- 1...Sd8
- 2.Bxc5#
- 1...e4
- 2.Rxe4#
- 1...Qxe3+
- Tries
- 1.Sc1?
- threat
- 2.Se2#
- 1...Qxe3+
- 2.fxe3#
- 1...Bxb4+
- 2.Rxb4#
- 1...Qa6
- 2.Sc2#
- 1...Bb5!
- threat
- 1.Sf4?
- threat
- 2.Sc2#
- 2.Se2#
- 1...Bxb4+
- 2.Rxb4#
- 1...exf4
- 2.Sc2#
- 2.Re4#
- 1...Qa6
- 2.Sc2#
- 1...Qb6
- 2.Se2#
- 1...Qg6
- 2.Se2#
- 1...Qh7
- 2.Se2#
- 1...Bb6
- 2.Se2#
- 1...Bb5
- 2.Sc2#
- 2.Sf5#
- 1...Bf5
- 2.Sxf5#
- 2.Se2#
- 2.bxa5#
- 1...Qxf4!
- threat
- 1.Sxc5?
- threat
- 2.Se6#
- 1...Qxe3+
- 2.fxe3#
- 1...Bxb4+
- 2.Rxb4#
- 1...Sxc5
- 2.Bxc5#
- 1...Qb6
- 2.Sc2#
- 1...Qe6
- 2.Sc2#
- 2.Sxe6#
- 1...Be6
- 2.Sxe6#
- 1...e4
- 2.Rxe4#
- 1...Bb6!
- threat
- 1.Rxe5?
- threat
- 2.Re4#
- 2.Rd5#
- 1...Qxe3+
- 2.fxe3#
- 1...Bxb4+
- 2.Rxb4#
- 1...Qf4
- 2.Rd5#
- 1...Qg5
- 2.Re4#
- 1...Qh4
- 2.Sc2#
- 2.Rd5#
- 1...Qh5
- 2.Sc2#
- 2.Re4#
- 1...Qb6
- 2.Re4#
- 1...Qc6
- 2.Sc2#
- 1...Qd6
- 2.Sc2#
- 2.Re4#
- 1...Qe6
- 2.Sc2#
- 1...Qg6
- 2.Sc2#
- 2.Rd5#
- 1...Qh7
- 2.Sc2#
- 2.Rd5#
- 1...Bb6
- 2.Re4#
- 1...Bf5
- 2.Rd5#
- 2.bxa5#
- 1...Be6
- 2.Re4#
- 1...Sd6
- 2.Bxc5#
- 2.Rd5#
- 1...Bc6!
- threat
- 1.Sc1?
- Keys
- 1.Rd8!
- threat
- 2.bxa5#
- 1...Qxe3+
- 2.fxe3#
- 1...Bxb4+
- 2.Rxb4#
- 1...Bxd8
- 2.b5#
- 1...Sxd8
- 2.Bxc5#
- 1...Qa6
- 2.Sc2#
- 2.Sf5#
- 1...Qb6
- 2.Sf5#
- 1...Qc6
- 2.Sc2#
- 2.Sf5#
- 1...Qd6
- 2.Sc2#
- 1...Qe6
- 2.Sc2#
- 1...Bb6
- 2.bxc5#
- 1...Bc7
- 2.bxc5#
- 2.b5#
- 1...Sd6
- 2.Bxc5#
- threat
- 1.Rd8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 19
- Sets
- Q(e);CHECK,OGATE,XS(E)::P(B),XQ(e)
- Q(e);N_PINS(E)::S(E)
- Q(e);N_PINP(H),N_PINS(E),P_PINP(B)::S(E)
- B(b);CHECK,OGATE,P_SPINB(b),XP(H)::R(G),XB(b)
- B(b);N_PINP(H)::R(G)+P(H)
- B(g);N_GUARD::R(G)+P(H),XB(b)
- S(f);N_GUARD::B(I),XR(c)
- P(d);OGATE::R1(J),XP(d)
- Tries
- Try
- S(D);
- Threat
- S(D)
- Vars
- Q(e);CHECK,OGATE,XS(E)::P(B),XQ(e)
- B(b);CHECK,OGATE,P_SPINB(b),XP(H)::R(G),XB(b)
- Q(e);N_PINS(E)::S(E)
- Refutation
- B(g);
- Try
- S(D);N_SPINS(E)
- Threat
- DUALS(2)
- Vars
- B(b);CHECK,OGATE,P_SPINB(b),XP(H)::R(G),XB(b)
- Q(e);::S(E)
- Q(e);N_SPINR(c)::S(D)
- Q(e);::S(D)
- B(b);N_PINP(H),N_SPINR(c)::S(D)
- Refutation
- Q(e);P_PINS(E),XS(D)
- Try
- S(D);XR(c)
- Threat
- B(I)+S(D),DCHECK
- Vars
- Q(e);CHECK,OGATE,XS(E)::P(B),XQ(e)
- B(b);CHECK,OGATE,P_SPINB(b),XP(H)::R(G),XB(b)
- S(f);OGATE,P_SPINS(f),XS(D)::B(I),XS(f)
- Q(e);N_PINS(E)::S(E)
- B(g);::B(I)+S(D),DCHECK,XB(g)
- P(d);OGATE::R1(J),XP(d)
- Refutation
- B(b);N_PINP(H)
- Try
- R(J);XP(d)
- Threat
- DUALS(2)
- Vars
- Q(e);CHECK,OGATE,XS(E)::P(B),XQ(e)
- B(b);CHECK,OGATE,P_SPINB(b),XP(H)::R(G),XB(b)
- Q(e);::R1(J)
- Q(e);N_PINS(E),N_SPINR(c)::R1(J)
- Q(e);N_PINS(E)::S(E)
- B(b);N_PINP(H),N_SPINR(c)::R1(J)
- B(g);::R1(J)
- Refutation
- B(g);
- Try
- Actual
- R(J);P_PINB(g)
- Threat
- R(G)+P(H),XB(b)
- Vars
- Q(e);CHECK,OGATE,XS(E)::P(B),XQ(e)
- B(b);CHECK,N_SPINB(g),OGATE,P_SPINB(b),XP(H)::R(G),XB(b)
- B(b);N_PINP(H),N_SPINB(g),XR(J)::R(G)+P(H)
- S(f);N_GUARD,N_SPINB(g),XR(J)::B(I),XR(c)
- Q(e);N_PINS(E),N_SPINR(c)::S(E)
- Q(e);N_PINS(E),N_SPINB(g)::S(E)
- Q(e);N_PINS(E)::S(E)
- B(b);N_PINP(H),N_SPINR(c)::R(G)+P(H),XR(c)
- S(f);N_GUARD,N_SPINB(g)::B(I),XR(c)
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).