MESON Chess Problem Database
Problem Display
PID: 84593 (3qN3/PQp5/p2p4/rb1p2p1/r2BkPB1/p4R2/3RPp2/Kn1Nb3 w - - 0 1)
Szwedowski, Leopold Mieczyslaw
South African Chess Player, 1960
#2
11 + 14
| 6490 | yacpdb | 2009 |
| 3770 | BCSC Postal | 2012-2013 |
SOLUTION
- SOUND
- Sets
- 1...Qf6
- 2.Sxf6#
- 1...Qd7
- 2.Sf6#
- 1...Qa8
- 2.Sf6#
- 1...Qb8
- 2.Sf6#
- 1...Qc8
- 2.Sf6#
- 1...Bc6
- 2.Qxb1#
- 1...Bd7
- 2.Qxb1#
- 1...Bxe8
- 2.Qxb1#
- 1...Sc3
- 2.Sxc3#
- 1...c5
- 2.Qh7#
- 1...c6
- 2.Qh7#
- 1...Qf6
- Tries
- 1.Sxd6+?
- 1...cxd6
- 2.Qh7#
- 1...Qxd6!
- 1...cxd6
- 1.Bxf2?
- threat
- 2.Qxd5#
- 1...Qf6+
- 2.Sxf6#
- 1...Bxe2
- 2.Rxe2#
- 1...Bxe8
- 2.Qxb1#
- 1...Sxd2
- 2.Sc3#
- 1...Qa8
- 2.Sf6#
- 1...Rd4
- 2.Rxd4#
- 1...Bd3
- 2.exd3#
- 1...Bc4
- 2.Rd4#
- 1...Bc6
- 2.Qxb1#
- 1...Bd7
- 2.Qxb1#
- 1...Sc3
- 2.Sxc3#
- 1...c6
- 2.Qh7#
- 1...Bxd2!
- threat
- 1.Bc3?
- threat
- 2.Qxd5#
- 1...Bxd2
- 2.Sxf2#
- 1...Bxe2
- 2.Rxe2#
- 1...Bxe8
- 2.Qxb1#
- 1...Sxc3
- 2.Sxc3#
- 1...Qa8
- 2.Sf6#
- 1...Rd4
- 2.Rxd4#
- 1...Bd3
- 2.exd3#
- 1...Bc4
- 2.Rd4#
- 1...Bc6
- 2.Qxb1#
- 1...Bd7
- 2.Qxb1#
- 1...c6
- 2.Qh7#
- 1...Sxd2!
- threat
- 1.Be3?
- threat
- 2.Qxd5#
- 1...Qf6+
- 2.Sxf6#
- 1...Bxd2
- 2.Sxf2#
- 1...Bxe8
- 2.Qxb1#
- 1...Sxd2
- 2.Sc3#
- 1...Qa8
- 2.Sf6#
- 1...Rd4
- 2.Rxd4#
- 1...Bd3
- 2.exd3#
- 1...Bc4
- 2.Rd4#
- 1...Bc6
- 2.Qxb1#
- 1...Bd7
- 2.Qxb1#
- 1...Sc3
- 2.Sxc3#
- 1...c6
- 2.Qh7#
- 1...Bxe2!
- threat
- 1.Bc5?
- threat
- 2.Qxd5#
- 1...Qf6+
- 2.Sxf6#
- 1...Bxd2
- 2.Sxf2#
- 1...Sxd2
- 2.Sc3#
- 1...Qa8
- 2.Sf6#
- 1...Rd4
- 2.Rxd4#
- 1...Bd3
- 2.exd3#
- 1...Bc4
- 2.Rd4#
- 1...Bc6
- 2.Qxb1#
- 1...Sc3
- 2.Sxc3#
- 1...c6
- 2.Qh7#
- 1...dxc5!
- threat
- 1.Be5?
- threat
- 2.Re3#
- 2.Qxd5#
- 1...Bxd2
- 2.Sxf2#
- 1...Bxe2
- 2.Rxe2#
- 2.Re3#
- 1...Bxe8
- 2.Re3#
- 2.Qxb1#
- 1...Sxd2
- 2.Sc3#
- 2.Re3#
- 1...gxf4
- 2.Qxd5#
- 1...f1S
- 2.Qxd5#
- 1...Qa8
- 2.Sf6#
- 2.Re3#
- 1...Rd4
- 2.Rxd4#
- 2.Re3#
- 1...Bd3
- 2.Re3#
- 2.exd3#
- 1...Bc4
- 2.Rd4#
- 2.Re3#
- 1...Bc6
- 2.Re3#
- 2.Qxb1#
- 1...Bd7
- 2.Re3#
- 2.Qxb1#
- 1...Sc3
- 2.Sxc3#
- 2.Re3#
- 1...c6
- 2.Re3#
- 2.Qh7#
- 1...dxe5!
- threat
- 1.Bf6?
- threat
- 2.Qxd5#
- 1...Qxf6+
- 2.Sxf6#
- 1...Bxd2
- 2.Sxf2#
- 1...Bxe2
- 2.Rxe2#
- 1...Bxe8
- 2.Qxb1#
- 1...Sxd2
- 2.Sc3#
- 1...Rd4
- 2.Rxd4#
- 1...Bd3
- 2.exd3#
- 1...Bc4
- 2.Rd4#
- 1...Bc6
- 2.Qxb1#
- 1...Bd7
- 2.Qxb1#
- 1...Sc3
- 2.Sxc3#
- 1...c6
- 2.Qh7#
- 1...Qa8!
- threat
- 1.Bg7?
- threat
- 2.Qxd5#
- 1...Qf6+
- 2.Sxf6#
- 1...Bxd2
- 2.Sxf2#
- 1...Bxe2
- 2.Rxe2#
- 1...Bxe8
- 2.Qxb1#
- 1...Sxd2
- 2.Sc3#
- 1...Qa8
- 2.Sf6#
- 1...Rd4
- 2.Rxd4#
- 1...Bd3
- 2.exd3#
- 1...Bc4
- 2.Rd4#
- 1...Bc6
- 2.Qxb1#
- 1...Bd7
- 2.Qxb1#
- 1...Sc3
- 2.Sxc3#
- 1...c6!
- threat
- 1.Sxd6+?
- Keys
- 1.Bh8!
- threat
- 2.Qxd5#
- 1...Qf6+
- 2.Sxf6#
- 1...Bxd2
- 2.Sxf2#
- 1...Bxe2
- 2.Rxe2#
- 1...Bxe8
- 2.Qxb1#
- 1...Sxd2
- 2.Sc3#
- 1...Qa8
- 2.Sf6#
- 1...Rd4
- 2.Rxd4#
- 1...Bd3
- 2.exd3#
- 1...Bc4
- 2.Rd4#
- 1...Bc6
- 2.Qxb1#
- 1...Bd7
- 2.Qxb1#
- 1...Sc3
- 2.Sxc3#
- 1...c6
- 2.Qh7#
- threat
- 1.Bh8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 4
- Sets
- Q(n);N_GUARD,P_PINB(F)::S(K),XQ(n)
- Q(n);N_GUARD::S(K)
- B(h);N_SPINP(i),OGATE::QAB(J),XS(a)
- B(h);OGATE::QAB(J),XS(a)
- B(h);OGATE,XS(K)::QAB(J),XS(a)
- S(a);N_GUARD::S(B),XS(a)
- P(m);OGATE::QAB(J)
- P(m);N_SPINP(i),OGATE::QAB(J)
- Tries
- Try
- S(K);CHECK,XP(l)
- Vars
- P(m);OGATE,XS(K)::QAB(J)
- Refutation
- Q(n);XS(K)
- Try
- B(F);XP(c)
- Threat
- QAB1(J),XP(i)
- Vars
- Q(n);CHECK,N_GUARD::S(K),XQ(n)
- B(h);OGATE,XP(D)::R(C),XB(h)
- B(h);OGATE,XS(K)::QAB(J),XS(a)
- S(a);N_GUARD,XR(C)::S(B)
- Q(n);N_GUARD::S(K)
- R(e);N_GUARD::R1(C),XR(e)
- B(h);OGATE::P(D),XB(h)
- B(h);S_CUTR(e)::R1(C)
- B(h);N_SPINP(i),OGATE::QAB(J),XS(a)
- B(h);OGATE::QAB(J),XS(a)
- S(a);N_GUARD::S(B),XS(a)
- P(m);N_SPINP(i),OGATE::QAB(J)
- Refutation
- B(b);XR(C)
- Try
- B(F);
- Threat
- QAB1(J),XP(i)
- Vars
- B(b);N_GUARD,XR(C)::S(B),XP(c)
- B(h);OGATE,XP(D)::R(C),XB(h)
- B(h);OGATE,XS(K)::QAB(J),XS(a)
- S(a);XB(F)::S(B),XS(a)
- Q(n);N_GUARD::S(K)
- R(e);N_GUARD::R1(C),XR(e)
- B(h);OGATE::P(D),XB(h)
- B(h);S_CUTR(e)::R1(C)
- B(h);N_SPINP(i),OGATE::QAB(J),XS(a)
- B(h);OGATE::QAB(J),XS(a)
- P(m);N_SPINP(i),OGATE::QAB(J)
- Refutation
- S(a);XR(C)
- Try
- B(F);
- Threat
- QAB1(J),XP(i)
- Vars
- Q(n);CHECK,N_GUARD::S(K),XQ(n)
- B(b);N_GUARD,XR(C)::S(B),XP(c)
- B(h);OGATE,XS(K)::QAB(J),XS(a)
- S(a);N_GUARD,XR(C)::S(B)
- Q(n);N_GUARD::S(K)
- R(e);N_GUARD::R1(C),XR(e)
- B(h);OGATE::P(D),XB(h)
- B(h);S_CUTR(e)::R1(C)
- B(h);N_SPINP(i),OGATE::QAB(J),XS(a)
- B(h);OGATE::QAB(J),XS(a)
- S(a);N_GUARD::S(B),XS(a)
- P(m);N_SPINP(i),OGATE::QAB(J)
- Refutation
- B(h);XP(D)
- Try
- B(F);
- Threat
- QAB1(J),XP(i)
- Vars
- Q(n);CHECK,N_GUARD::S(K),XQ(n)
- B(b);N_GUARD,XR(C)::S(B),XP(c)
- S(a);N_GUARD,XR(C)::S(B)
- Q(n);N_GUARD::S(K)
- R(e);N_GUARD::R1(C),XR(e)
- B(h);OGATE::P(D),XB(h)
- B(h);S_CUTR(e)::R1(C)
- B(h);N_SPINP(i),OGATE::QAB(J),XS(a)
- S(a);N_GUARD::S(B),XS(a)
- P(m);N_SPINP(i),OGATE::QAB(J)
- Refutation
- P(l);XB(F)
- Try
- B(F);
- Threat
- DUALS(2)
- Vars
- B(b);N_GUARD,XR(C)::S(B),XP(c)
- P(j);XP(G)::QAB1(J),XP(i)
- P(c);::QAB1(J),XP(i)
- Refutation
- P(l);XB(F)
- Try
- B(F);
- Threat
- QAB1(J),XP(i)
- Vars
- Q(n);CHECK,XB(F)::S(K),XQ(n)
- B(b);N_GUARD,XR(C)::S(B),XP(c)
- B(h);OGATE,XP(D)::R(C),XB(h)
- B(h);OGATE,XS(K)::QAB(J),XS(a)
- S(a);N_GUARD,XR(C)::S(B)
- R(e);N_GUARD::R1(C),XR(e)
- B(h);OGATE::P(D),XB(h)
- B(h);S_CUTR(e)::R1(C)
- B(h);N_SPINP(i),OGATE::QAB(J),XS(a)
- B(h);OGATE::QAB(J),XS(a)
- S(a);N_GUARD::S(B),XS(a)
- P(m);N_SPINP(i),OGATE::QAB(J)
- Refutation
- Q(n);
- Try
- B(F);
- Threat
- QAB1(J),XP(i)
- Vars
- Q(n);CHECK,N_GUARD::S(K),XQ(n)
- B(b);N_GUARD,XR(C)::S(B),XP(c)
- B(h);OGATE,XP(D)::R(C),XB(h)
- B(h);OGATE,XS(K)::QAB(J),XS(a)
- S(a);N_GUARD,XR(C)::S(B)
- Q(n);N_GUARD::S(K)
- R(e);N_GUARD::R1(C),XR(e)
- B(h);OGATE::P(D),XB(h)
- B(h);S_CUTR(e)::R1(C)
- B(h);N_SPINP(i),OGATE::QAB(J),XS(a)
- B(h);OGATE::QAB(J),XS(a)
- S(a);N_GUARD::S(B),XS(a)
- Refutation
- P(m);N_SPINP(i)
- Try
- Actual
- B(F);
- Threat
- QAB1(J),XP(i)
- Vars
- Q(n);CHECK,N_GUARD::S(K),XQ(n)
- B(b);N_GUARD,XR(C)::S(B),XP(c)
- B(h);OGATE,XP(D)::R(C),XB(h)
- B(h);OGATE,XS(K)::QAB(J),XS(a)
- S(a);N_GUARD,XR(C)::S(B)
- Q(n);N_GUARD::S(K)
- R(e);N_GUARD::R1(C),XR(e)
- B(h);OGATE::P(D),XB(h)
- B(h);S_CUTR(e)::R1(C)
- B(h);N_SPINP(i),OGATE::QAB(J),XS(a)
- B(h);OGATE::QAB(J),XS(a)
- S(a);N_GUARD::S(B),XS(a)
- P(m);N_SPINP(i),OGATE::QAB(J)
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).