MESON Chess Problem Database
Problem Display
PID: 239669 (8/4PP2/1p1R1pKQ/b2RN3/q3k1NP/nr2p1n1/2ppP1P1/3b1r2 w - - 0 1)
Pituk, Alexander
Magyar Sakkelet, 1965
#2
11 + 13
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qb5
- 2.Rd4#
- 1...Qc6
- 2.Rd4#
- 1...Qd7
- 2.Rd4#
- 1...Qe8
- 2.Rd4#
- 1...Qd4
- 2.Rxd4#
- 1...Re1
- 2.Sxf6#
- 1...Rg1
- 2.Sxf6#
- 1...Rh1
- 2.Sxf6#
- 1...Rf3
- 2.gxf3#
- 1...Rb1
- 2.Qxe3#
- 1...Rb2
- 2.Qxe3#
- 1...Rd3
- 2.exd3#
- 1...Rb4
- 2.Qxe3#
- 1...Rb5
- 2.Qxe3#
- 1...Bc3
- 2.Qxe3#
- 1...Bb4
- 2.Rd4#
- 1...Sc4
- 2.Rd4#
- 1...Sf5
- 2.Sxf6#
- 1...fxe5
- 2.Rxe5#
- 1...f5
- 2.Sf6#
- 1...Qb5
- Tries
- 1.Sf3?
- threat
- 2.Sxf6#
- 1...Rxf3
- 2.gxf3#
- 1...Qd4
- 2.Rxd4#
- 1...Bc3
- 2.Qxe3#
- 1...f5
- 2.Sf6#
- 2.Re5#
- 1...Sh5!
- threat
- 1.Sc4?
- threat
- 2.Rd4#
- 1...Qxc4
- 2.e8Q#
- 2.e8R#
- 1...Rd3
- 2.exd3#
- 1...Bc3
- 2.Qxe3#
- 1...Sb5
- 2.e8Q#
- 2.e8R#
- 1...Sf5
- 2.Sxf6#
- 1...Sxe2!
- threat
- 1.Sc6?
- threat
- 2.e8Q#
- 2.e8R#
- 1...Qxc6
- 2.Rd4#
- 1...Bxe2
- 2.e8Q#
- 2.e8R#
- 1...Sxe2
- 2.e8Q#
- 2.e8R#
- 1...c1Q
- 2.e8Q#
- 2.e8R#
- 1...c1S
- 2.e8Q#
- 2.e8R#
- 1...c1B
- 2.e8Q#
- 2.e8R#
- 1...c1R
- 2.e8Q#
- 2.e8R#
- 1...Qb5
- 2.Rd4#
- 2.e8Q#
- 2.e8R#
- 1...Qb4
- 2.e8Q#
- 2.e8R#
- 1...Qc4
- 2.e8Q#
- 2.e8R#
- 1...Qd4
- 2.Rxd4#
- 1...Re1
- 2.Sxf6#
- 2.e8Q#
- 2.e8R#
- 1...Rg1
- 2.Sxf6#
- 2.e8Q#
- 2.e8R#
- 1...Rh1
- 2.Sxf6#
- 2.e8Q#
- 2.e8R#
- 1...Rf2
- 2.e8Q#
- 2.e8R#
- 1...Rf3
- 2.gxf3#
- 2.e8Q#
- 2.e8R#
- 1...Rf4
- 2.e8Q#
- 2.e8R#
- 1...Rb1
- 2.Qxe3#
- 2.e8Q#
- 2.e8R#
- 1...Rb2
- 2.Qxe3#
- 2.e8Q#
- 2.e8R#
- 1...Rc3
- 2.e8Q#
- 2.e8R#
- 1...Rd3
- 2.exd3#
- 2.e8Q#
- 2.e8R#
- 1...Rb4
- 2.Qxe3#
- 2.e8Q#
- 2.e8R#
- 1...Rb5
- 2.Qxe3#
- 2.e8Q#
- 2.e8R#
- 1...Bc3
- 2.Qxe3#
- 1...Bb4
- 2.Rd4#
- 2.e8Q#
- 2.e8R#
- 1...Sb1
- 2.e8Q#
- 2.e8R#
- 1...Sc4
- 2.Rd4#
- 1...Sb5
- 2.e8Q#
- 2.e8R#
- 1...Sh1
- 2.e8Q#
- 2.e8R#
- 1...Sf5
- 2.Sxf6#
- 1...Sh5
- 2.e8Q#
- 2.e8R#
- 1...b5
- 2.e8Q#
- 2.e8R#
- 1...f5
- 2.Sf6#
- 2.Re5#
- 2.e8Q#
- 2.e8R#
- 1...Rf5!
- threat
- 1.Sd7?
- threat
- 2.e8Q#
- 2.e8R#
- 1...Qxd7
- 2.Rd4#
- 1...Bxe2
- 2.e8Q#
- 2.e8R#
- 1...Sxe2
- 2.e8Q#
- 2.e8R#
- 1...c1Q
- 2.e8Q#
- 2.e8R#
- 1...c1S
- 2.e8Q#
- 2.e8R#
- 1...c1B
- 2.e8Q#
- 2.e8R#
- 1...c1R
- 2.e8Q#
- 2.e8R#
- 1...Qb5
- 2.Rd4#
- 2.e8Q#
- 2.e8R#
- 1...Qc6
- 2.Rd4#
- 2.e8Q#
- 2.e8R#
- 1...Qb4
- 2.e8Q#
- 2.e8R#
- 1...Qc4
- 2.e8Q#
- 2.e8R#
- 1...Qd4
- 2.Rxd4#
- 1...Re1
- 2.Sgxf6#
- 2.Sdxf6#
- 2.e8Q#
- 2.e8R#
- 1...Rg1
- 2.Sgxf6#
- 2.Sdxf6#
- 2.e8Q#
- 2.e8R#
- 1...Rh1
- 2.Sgxf6#
- 2.Sdxf6#
- 2.e8Q#
- 2.e8R#
- 1...Rf2
- 2.e8Q#
- 2.e8R#
- 1...Rf3
- 2.gxf3#
- 2.e8Q#
- 2.e8R#
- 1...Rf4
- 2.e8Q#
- 2.e8R#
- 1...Rb1
- 2.Qxe3#
- 2.e8Q#
- 2.e8R#
- 1...Rb2
- 2.Qxe3#
- 2.e8Q#
- 2.e8R#
- 1...Rc3
- 2.e8Q#
- 2.e8R#
- 1...Rd3
- 2.exd3#
- 2.e8Q#
- 2.e8R#
- 1...Rb4
- 2.Qxe3#
- 2.e8Q#
- 2.e8R#
- 1...Rb5
- 2.Qxe3#
- 2.e8Q#
- 2.e8R#
- 1...Bc3
- 2.Qxe3#
- 1...Bb4
- 2.Rd4#
- 2.e8Q#
- 2.e8R#
- 1...Sb1
- 2.e8Q#
- 2.e8R#
- 1...Sc4
- 2.Rd4#
- 1...Sb5
- 2.e8Q#
- 2.e8R#
- 1...Sh1
- 2.e8Q#
- 2.e8R#
- 1...Sf5
- 2.Sgxf6#
- 2.Sdxf6#
- 1...Sh5
- 2.e8Q#
- 2.e8R#
- 1...b5
- 2.Sc5#
- 2.e8Q#
- 2.e8R#
- 1...f5
- 2.Sgf6#
- 2.Sdf6#
- 2.Re5#
- 2.e8Q#
- 2.e8R#
- 1...Rf5!
- threat
- 1.e8Q?
- threat
- 2.Sc6#
- 2.Sd7#
- 1...Qxe8
- 2.Rd4#
- 1...fxe5
- 2.Rxe5#
- 2.Qxe5#
- 1...Qc6
- 2.Sxc6#
- 2.Sd7#
- 2.Rd4#
- 1...Qd7
- 2.Sxd7#
- 2.Rd4#
- 1...Qd4
- 2.Rxd4#
- 1...Bc3
- 2.Qxe3#
- 1...Sc4
- 2.Rd4#
- 1...Sf5
- 2.Sxf6#
- 1...Rf5!
- threat
- 1.e8R?
- threat
- 2.Sc6#
- 2.Sd7#
- 1...Qxe8
- 2.Rd4#
- 1...fxe5
- 2.Rdxe5#
- 2.Rexe5#
- 1...Qc6
- 2.Sxc6#
- 2.Sd7#
- 2.Rd4#
- 1...Qd7
- 2.Sxd7#
- 2.Rd4#
- 1...Qd4
- 2.Rxd4#
- 1...Bc3
- 2.Qxe3#
- 1...Sc4
- 2.Rd4#
- 1...Sf5
- 2.Sxf6#
- 1...Rf5!
- threat
- 1.Sf3?
- Keys
- 1.Sd3!
- threat
- 2.Qxe3#
- 1...Rxd3
- 2.exd3#
- 1...Qd4
- 2.Rxd4#
- 1...Rf3
- 2.gxf3#
- 1...Rf4
- 2.Qxf4#
- 1...Sc4
- 2.Rd4#
- 1...Sf5
- 2.Sxf6#
- threat
- 1.Sd3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 15
- Sets
- Q(i);N_GUARD::R1(E)
- Q(i);N_GUARD,P_PINP(K)::R1(E)
- Q(i);N_GUARD::R1(E),XQ(i)
- R(b);N_GUARD::S(C),XP(m)
- R(b);OGATE::P(B),XR(b)
- R(f);N_GUARD::QAR1(I),XP(g)
- R(f);OGATE::P(A),XR(f)
- B(k);S_CUTR(f)::QAR1(I),XP(g)
- B(k);S_CUTQ(i)::R1(E)
- S(e);S_CUTQ(i)::R1(E)
- S(h);S_CUTR(b)::S(C),XP(m)
- P(m);OGATE,XS(F)::R1(E),XP(m)
- P(m);S_CUTR(b)::S(C)
- Tries
- Try
- S(F);
- Threat
- S(C),XP(m)
- Vars
- R(b);OGATE,XS(F)::P(B),XR(b)
- Q(i);N_GUARD::R1(E),XQ(i)
- B(k);S_CUTR(f)::QAR1(I),XP(g)
- Refutation
- S(h);
- Try
- S(F);
- Threat
- R1(E)
- Vars
- Q(i);N_GUARD,XS(F)::P=Q
- R(f);OGATE::P(A),XR(f)
- B(k);S_CUTR(f)::QAR1(I),XP(g)
- S(e);S_CUTQ(i)::P=Q
- S(h);S_CUTR(b)::S(C),XP(m)
- Refutation
- S(h);XP(A)
- Try
- S(F);
- Threat
- P=Q
- Vars
- Q(i);N_GUARD,XS(F)::R1(E)
- B(a);XP(A)::P=Q
- S(h);XP(A)::P=Q
- P(c);::P=Q
- Q(i);::P=Q
- Q(i);N_GUARD::R1(E),XQ(i)
- R(b);::P=Q
- R(f);::P=Q
- B(k);S_CUTR(f)::QAR1(I),XP(g)
- S(e);::P=Q
- S(e);S_CUTQ(i)::R1(E)
- S(h);::P=Q
- S(h);S_CUTR(b)::S(C),XP(m)
- P(l);::P=Q
- Refutation
- R(b);
- Try
- S(F);
- Threat
- P=Q
- Vars
- Q(i);N_GUARD,XS(F)::R1(E)
- B(a);XP(A)::P=Q
- S(h);XP(A)::P=Q
- P(c);::P=Q
- Q(i);::P=Q
- Q(i);N_GUARD::R1(E),XQ(i)
- R(b);::P=Q
- R(f);::P=Q
- B(k);S_CUTR(f)::QAR1(I),XP(g)
- S(e);::P=Q
- S(e);S_CUTQ(i)::R1(E)
- S(h);::P=Q
- Refutation
- R(b);
- Try
- P(J);
- Threat
- DUALS(2)
- Vars
- Q(i);N_GUARD,P_PINP(K),XQ(J)::R1(E)
- Q(i);N_GUARD::R1(E),XQ(i)
- B(k);S_CUTR(f)::QAR1(I),XP(g)
- S(e);S_CUTQ(i)::R1(E)
- S(h);S_CUTR(b)::S(C),XP(m)
- Refutation
- R(b);
- Try
- P(J);
- Threat
- DUALS(2)
- Vars
- Q(i);N_GUARD,P_PINP(K),XR(J)::R1(E)
- Q(i);N_GUARD::R1(E),XQ(i)
- B(k);S_CUTR(f)::QAR1(I),XP(g)
- S(e);S_CUTQ(i)::R1(E)
- S(h);S_CUTR(b)::S(C),XP(m)
- Refutation
- R(b);
- Try
- Actual
- S(F);
- Threat
- QAR1(I),XP(g)
- Vars
- R(f);OGATE,XS(F)::P(A),XR(f)
- Q(i);N_GUARD::R1(E),XQ(i)
- R(b);OGATE::P(B),XR(b)
- R(b);N_GUARD::QAR1(I),XR(b)
- S(e);S_CUTQ(i)::R1(E)
- S(h);S_CUTR(b)::S(C),XP(m)
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).