MESON Chess Problem Database
Problem Display
PID: 231341 (5R2/1p1R3b/3NP3/2r1k3/1NQ1n3/1K1Pr2B/3p4/3n4 w - - 0 1)
Mari, Alberto
Shakhmaty, 1927
#2
9 + 8
| 6490 | yacpdb | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Re1
- 2.d4#
- 1...Re2
- 2.d4#
- 1...Rxd3+
- 2.Sxd3#
- 1...Rxc4
- 2.Sxc4#
- 1...Rd5
- 2.Qxd5#
- 1...Rc6
- 2.Qd5#
- 1...Rc7
- 2.Qd5#
- 1...Rc8
- 2.Qd5#
- 1...Bf5
- 2.Rxf5#
- 1...Bg8
- 2.Rf5#
- 1...Sdc3
- 2.d4#
- 1...Sf2
- 2.Qf4#
- 2.Qxc5#
- 1...Sec3
- 2.Qf4#
- 2.d4#
- 1...Sg3
- 2.Qf4#
- 2.Qxc5#
- 1...Sg5
- 2.Qf4#
- 2.Qxc5#
- 1...Sxd6
- 2.Qf4#
- 2.Qxc5#
- 1...Sf6
- 2.Sf7#
- 1...Re1
- Tries
- 1.Sxe4?
- threat
- 2.Qd4#
- 2.Qxc5#
- 1...Rxd3+
- 2.Sxd3#
- 1...Rxe4
- 2.Qxc5#
- 1...Rxc4
- 2.Rd5#
- 1...Bxe4
- 2.Qd4#
- 1...Bf5
- 2.Rxf5#
- 1...Ra5
- 2.Qd4#
- 2.Qc7#
- 1...Rb5
- 2.Qxb5#
- 2.Qd4#
- 2.Qc7#
- 1...Rd5
- 2.Rxd5#
- 2.Qxd5#
- 1...Rc6
- 2.Rd5#
- 2.Qd5#
- 2.Qd4#
- 1...Rc7
- 2.Rd5#
- 2.Qd5#
- 2.Qd4#
- 2.Qxc7#
- 1...Rc8
- 2.Rd5#
- 2.Qd5#
- 2.Qd4#
- 1...Sc3
- 2.Qd4#
- 1...b6
- 2.Qd4#
- 1...Rxh3!
- threat
- 1.Sb5?
- threat
- 2.Qd4#
- 1...Rxd3+
- 2.Sxd3#
- 1...Rxc4
- 2.Rd5#
- 1...Bf5
- 2.Rxf5#
- 1...Rd5
- 2.Rxd5#
- 2.Qxd5#
- 1...Rxh3!
- threat
- 1.Sxb7?
- threat
- 2.Qd4#
- 1...Rxd3+
- 2.Sxd3#
- 1...Rxc4
- 2.Rd5#
- 1...Bf5
- 2.Rxf5#
- 1...Rd5
- 2.Sc6#
- 2.Rxd5#
- 2.Qxd5#
- 1...Sd6
- 2.Qf4#
- 2.Qxc5#
- 1...Rxh3!
- threat
- 1.Sc8?
- threat
- 2.Qd4#
- 1...Rxd3+
- 2.Sxd3#
- 1...Rxc4
- 2.Rd5#
- 1...Bf5
- 2.Rxf5#
- 1...Rd5
- 2.Rxd5#
- 2.Qxd5#
- 1...Sd6
- 2.Qf4#
- 2.Qxc5#
- 1...Rxh3!
- threat
- 1.Se8?
- threat
- 2.Qd4#
- 1...Rxd3+
- 2.Sxd3#
- 1...Rxc4
- 2.Rd5#
- 1...Bf5
- 2.Rxf5#
- 1...Rd5
- 2.Rxd5#
- 2.Qxd5#
- 1...Sd6
- 2.Qf4#
- 2.Qxc5#
- 1...Rxh3!
- threat
- 1.e7?
- threat
- 2.e8Q#
- 2.e8R#
- 1...Rxd3+
- 2.Sxd3#
- 1...Rxh3
- 2.e8Q#
- 2.e8R#
- 1...Rxc4
- 2.Sxc4#
- 1...Sxd6
- 2.Qf4#
- 2.Qxc5#
- 1...Bf5
- 2.Rxf5#
- 1...Rf3
- 2.e8Q#
- 2.e8R#
- 1...Re1
- 2.d4#
- 2.e8Q#
- 2.e8R#
- 1...Re2
- 2.d4#
- 2.e8Q#
- 2.e8R#
- 1...Rg3
- 2.e8Q#
- 2.e8R#
- 1...Ra5
- 2.e8Q#
- 2.e8R#
- 1...Rb5
- 2.e8Q#
- 2.e8R#
- 1...Rd5
- 2.Qxd5#
- 2.e8Q#
- 2.e8R#
- 1...Rc6
- 2.Qd5#
- 2.e8Q#
- 2.e8R#
- 1...Rc7
- 2.Qd5#
- 2.e8Q#
- 2.e8R#
- 1...Rc8
- 2.Qd5#
- 1...Bg8
- 2.Rf5#
- 1...Sb2
- 2.e8Q#
- 2.e8R#
- 1...Sdf2
- 2.e8Q#
- 2.e8R#
- 1...Sdc3
- 2.d4#
- 2.e8Q#
- 2.e8R#
- 1...Sef2
- 2.Qf4#
- 2.Qxc5#
- 2.e8Q#
- 2.e8R#
- 1...Sec3
- 2.Qf4#
- 2.d4#
- 2.e8Q#
- 2.e8R#
- 1...Sg3
- 2.Qf4#
- 2.Qxc5#
- 2.e8Q#
- 2.e8R#
- 1...Sg5
- 2.Qf4#
- 2.Qxc5#
- 1...Sf6
- 2.Sf7#
- 1...b5
- 2.e8Q#
- 2.e8R#
- 1...b6
- 2.e8Q#
- 2.e8R#
- 1...Bg6!
- threat
- 1.Sxe4?
- Keys
- 1.Kc2!
- threat
- 2.d4#
- 1...Rxc4+
- 2.Sxc4#
- 1...Rxd3
- 2.Sxd3#
- 1...Sxd6
- 2.Qxc5#
- 1...Bf5
- 2.Rxf5#
- 1...Rd5
- 2.Qxd5#
- 1...Sef2
- 2.Qxc5#
- 1...Sec3
- 2.Qf4#
- 1...Sg3
- 2.Qxc5#
- 1...Sg5
- 2.Qxc5#
- 1...Sf6
- 2.Sf7#
- threat
- 1.Kc2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 7
- Sets
- R(c);N_PINP(B)::P(B)
- R(c);CHECK,XP(B)::S(D),XR(c)
- R(e);XQ(E)::S(F),XR(e)
- R(e);N_GUARD::QAR1(E),XR(e)
- R(e);N_GUARD::QAR1(E)
- B(h);N_GUARD::R1(I),XB(h)
- B(h);N_GUARD::R1(I)
- S(a);N_PINP(B)::P(B)
- S(d);SBLOCK::S(F)
- Tries
- Try
- S(F);XS(d)
- Threat
- DUALS(2)
- Vars
- R(c);CHECK,XP(B)::S(D),XR(c)
- R(c);N_PINP(B),XS(F)::QAR2(E),XR(e)
- R(e);N_GUARD,XQ(E)::R1(H)
- B(h);XS(F)::QAB1(E)
- B(h);N_GUARD::R1(I),XB(h)
- S(a);N_PINP(B)::QAB1(E)
- P(g);::QAB1(E)
- Refutation
- R(c);XB(C)
- Try
- S(F);
- Threat
- QAB1(E)
- Vars
- R(c);CHECK,XP(B)::S(D),XR(c)
- R(e);N_GUARD,XQ(E)::R1(H)
- B(h);N_GUARD::R1(I),XB(h)
- Refutation
- R(c);XB(C)
- Try
- S(F);XP(g)
- Threat
- QAB1(E)
- Vars
- R(c);CHECK,XP(B)::S(D),XR(c)
- R(e);N_GUARD,XQ(E)::R1(H)
- B(h);N_GUARD::R1(I),XB(h)
- Refutation
- R(c);XB(C)
- Try
- S(F);
- Threat
- QAB1(E)
- Vars
- R(c);CHECK,XP(B)::S(D),XR(c)
- R(e);N_GUARD,XQ(E)::R1(H)
- B(h);N_GUARD::R1(I),XB(h)
- Refutation
- R(c);XB(C)
- Try
- S(F);
- Threat
- QAB1(E)
- Vars
- R(c);CHECK,XP(B)::S(D),XR(c)
- R(e);N_GUARD,XQ(E)::R1(H)
- B(h);N_GUARD::R1(I),XB(h)
- Refutation
- R(c);XB(C)
- Try
- P(G);
- Threat
- P=Q
- Vars
- R(c);CHECK,XP(B)::S(D),XR(c)
- R(c);XB(C)::P=Q
- R(e);XQ(E)::S(F),XR(e)
- B(h);N_GUARD::R1(I),XB(h)
- R(c);::P=Q
- R(e);::P=Q
- R(e);P_PINS(D)::P=Q
- R(e);N_GUARD::QAR1(E)
- B(h);N_GUARD,P_PINQ(E)::R1(I)
- S(a);::P=Q
- S(d);SBLOCK::S(F)
- P(g);::P=Q
- Refutation
- B(h);
- Try
- Actual
- K(A);N_SPINP(B),P_SPINQ(E),S_FLIGHT
- Threat
- P(B)
- Vars
- R(e);CHECK,XQ(E)::S(F),XR(e)
- R(c);XP(B)::S(D),XR(c)
- S(d);N_GUARD,P_PINP(B),XS(F)::QAR2(E),XR(e)
- B(h);N_GUARD::R1(I),XB(h)
- R(e);N_PINQ(E)::QAR1(E),XR(e)
- S(d);N_GUARD,P_PINP(B)::QAR2(E),XR(e)
- S(d);N_PINQ(E),P_PINP(B)::QAB1(E)
- S(d);P_PINP(B),SBLOCK::S(F)
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).