MESON Chess Problem Database
Problem Display
PID: 169909 (4Rnq1/3pp2p/Q2R1N1P/2p2r2/2n1p3/2K1k2N/1PP1p1P1/4B3 w - - 0 1)
Betesa Raurell, Salvador
3rd Prize, SEPA TT, 1945
#2
11 + 11
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qd5
- 2.Sg4#
- 1...Qe6
- 2.Sg4#
- 1...Qf7
- 2.Sg4#
- 1...Qg4
- 2.Sxg4#
- 1...Rf2
- 2.Bxf2#
- 1...Rd5
- 2.Bf2#
- 1...Re5
- 2.Bf2#
- 1...Rg5
- 2.Bf2#
- 1...Rh5
- 2.Bf2#
- 1...Sxb2
- 2.Bd2#
- 1...Sd2
- 2.Bxd2#
- 1...Sa3
- 2.Bd2#
- 1...Sa5
- 2.Bd2#
- 1...Se5
- 2.Bd2#
- 1...Sb6
- 2.Bd2#
- 1...Sxd6
- 2.Bd2#
- 1...Sg6
- 2.Sg4#
- 1...exd6
- 2.Rxe4#
- 1...exf6
- 2.Rd3#
- 1...Qd5
- Tries
- 1.Sd5+?
- 1...Rxd5
- 2.Bf2#
- 1...Qxd5!
- 1...Rxd5
- 1.Rxe7?
- threat
- 2.Rd3#
- 2.Rxe4#
- 1...Qxg2
- 2.Rd3#
- 1...Rxf6
- 2.Rd3#
- 1...Sxb2
- 2.Bd2#
- 2.Rxe4#
- 1...Sxd6
- 2.Bd2#
- 2.Qd3#
- 1...Qd5
- 2.Sg4#
- 1...Qe6
- 2.Sg4#
- 1...Qg4
- 2.Sxg4#
- 2.Rd3#
- 1...Rf4
- 2.Rd3#
- 1...Rd5
- 2.Bf2#
- 2.Rxe4#
- 1...Re5
- 2.Bf2#
- 1...Sd2
- 2.Bxd2#
- 2.Rd3#
- 2.Qd3#
- 1...Se5
- 2.Bd2#
- 1...Se6!
- threat
- 1.Sd5+?
- Keys
- 1.Qa3!
- 1...Qxg2
- 2.Kxc4#
- 1...Rxf6
- 2.Qxc5#
- 1...Sxb2
- 2.Bd2#
- 1...Sxa3
- 2.Bd2#
- 1...Sxd6
- 2.Bd2#
- 1...exd6
- 2.Rxe4#
- 1...exf6
- 2.Rd3#
- 1...Qg3
- 2.Kxc4#
- 1...Qd5
- 2.Sg4#
- 1...Qe6
- 2.Sg4#
- 1...Qf7
- 2.Sg4#
- 1...Qg4
- 2.Kxc4#
- 2.Sxg4#
- 1...Qg5
- 2.Kxc4#
- 1...Qg6
- 2.Kxc4#
- 1...Qg7
- 2.Kxc4#
- 1...Qh8
- 2.Kxc4#
- 1...Rf1
- 2.Qxc5#
- 1...Rf2
- 2.Bxf2#
- 2.Qxc5#
- 1...Rf3
- 2.Qxc5#
- 1...Rf4
- 2.Qxc5#
- 1...Rd5
- 2.Bf2#
- 1...Re5
- 2.Bf2#
- 1...Rg5
- 2.Bf2#
- 1...Rh5
- 2.Bf2#
- 1...Sd2
- 2.Bxd2#
- 1...Sa5
- 2.Bd2#
- 1...Se5
- 2.Bd2#
- 2.Qxc5#
- 1...Sb6
- 2.Bd2#
- 1...Se6
- 2.Kxc4#
- 1...Sg6
- 2.Sg4#
- 1...e5
- 2.Qxc5#
- 1...e6
- 2.Kxc4#
- 1...Qxg2
- 1.Qa3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 13
- REMOVED MATES = 3
- Sets
- Q(k);N_GUARD::S(I)
- Q(k);N_GUARD::S(I),XQ(k)
- R(f);N_GUARD::B(A),XR(f)
- R(f);N_GUARD::B(A)
- S(c);N_GUARD,XP(B)::B(A)
- S(c);N_GUARD::B(A),XS(c)
- S(c);N_GUARD::B(A)
- S(c);N_GUARD,XR(H)::B(A)
- S(j);S_CUTQ(k)::S(I)
- P(h);OGATE,P_SPINP(d),XR(H)::R1(K),XP(d)
- P(h);P_SPINP(d),XS(I)::R1(H)
- Tries
- Try
- S(I);CHECK
- Vars
- R(f);XS(I)::B(A)
- Refutation
- Q(k);XS(I)
- Try
- R(K);P_PINP(d),XP(h)
- Threat
- DUALS(2)
- Vars
- Q(k);XP(D)::R1(H)
- R(f);XS(I)::R1(H)
- Q(k);N_GUARD::S(I)
- Q(k);N_GUARD,N_SPINP(d)::S(I)
- R(f);::R1(H)
- R(f);N_GUARD,N_SPINP(d)::B(A)
- S(c);N_GUARD,N_SPINP(d)::B(A)
- Refutation
- S(j);N_SPINP(d)
- Try
- Actual
- Q(G);
- Vars
- Q(k);XP(D)::QAR(G)+K(E),XS(c)
- R(f);N_GUARD,XS(I)::QAB(G),XP(e)
- S(c);N_GUARD,XP(B)::B(A)
- S(c);N_GUARD,XQ(G)::B(A)
- S(c);N_GUARD,XR(H)::B(A)
- P(h);OGATE,P_SPINP(d),XR(H)::R1(K),XP(d)
- P(h);P_SPINP(d),XS(I)::R1(H)
- Q(k);::QAR(G)+K(E),XS(c)
- Q(k);N_GUARD::S(I)
- Q(k);P_PINS(I)::QAR(G)+K(E),XS(c)
- R(f);N_GUARD::QAB(G),XP(e)
- R(f);N_GUARD::B(A)
- S(c);N_GUARD::B(A),XS(c)
- S(c);N_GUARD::B(A)
- S(j);::QAR(G)+K(E),XS(c)
- S(j);S_CUTQ(k)::S(I)
- P(h);S_CUTR(f)::QAB(G),XP(e)
- P(h);::QAR(G)+K(E),XS(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).