MESON Chess Problem Database
Problem Display
PID: 275925 (8/4N1p1/1p2N1K1/1p1Bk3/1Qp1p1p1/4R1n1/3P4/8 w - - 0 1)
Alekseev, Yuri Mikhailovich
Shakhmatnaya kompozitsiya, 2024
#2
7 + 8
SOLUTION
- SOUND
- Sets
- 1...Sf1
- 2.Rxe4#
- 1...Sh1
- 2.Rxe4#
- 1...Se2
- 2.Rxe4#
- 1...Sf5
- 2.Rxe4#
- 1...Sh5
- 2.Rxe4#
- 1...c3
- 2.d4#
- 1...Sf1
- Tries
- 1.Kg5?
- 1...Sf1
- 2.Rxe4#
- 1...Sh1
- 2.Rxe4#
- 1...Se2
- 2.Rxe4#
- 1...Sf5
- 2.Rxe4#
- 1...Sh5
- 2.Rxe4#
- 1...c3
- 2.d4#
- 1...g6!
- 1...Sf1
- 1.Sc7?
- 1...Kd4
- 2.Sc6#
- 1...Kf4
- 2.Qd6#
- 1...Sf1
- 2.Rxe4#
- 1...Sh1
- 2.Rxe4#
- 1...Se2
- 2.Rxe4#
- 1...Sf5
- 2.Rxe4#
- 1...Sh5
- 2.Rxe4#
- 1...c3!
- 1...Kd4
- 1.Sd8?
- 1...Kd4
- 2.Sdc6#
- 1...Kf4
- 2.Qd6#
- 1...Sf1
- 2.Rxe4#
- 1...Sh1
- 2.Rxe4#
- 1...Se2
- 2.Rxe4#
- 1...Sf5
- 2.Rxe4#
- 1...Sh5
- 2.Rxe4#
- 1...c3!
- 1...Kd4
- 1.Sf5?
- threat
- 2.Qd6#
- 1...Kxd5
- 2.Qd6#
- 1...Sxf5!
- threat
- 1.Sc8?
- threat
- 2.Qd6#
- 1...Kxd5
- 2.Qd6#
- 1...Sf5!
- threat
- 1.Bxc4?
- threat
- 2.Sc6#
- 2.d4#
- 1...Se2
- 2.Sc6#
- 1...Sf5
- 2.Sc6#
- 1...bxc4!
- threat
- 1.Rxg3?
- 1...e3
- 2.Rxe3#
- 1...c3!
- 1...e3
- 1.Qa3?
- 1...c3
- 2.d4#
- 1...Sf1
- 2.Rxe4#
- 1...Sh1
- 2.Rxe4#
- 1...Se2
- 2.Rxe4#
- 1...Sf5
- 2.Rxe4#
- 1...Sh5
- 2.Rxe4#
- 1...b4!
- 1...c3
- 1.Qc5?
- threat
- 2.Sc6#
- 2.Qc7#
- 1...Sf5
- 2.Sc6#
- 2.Rxe4#
- 1...bxc5!
- threat
- 1.d3?
- threat
- 2.d4#
- 1...Se2
- 2.Rxe4#
- 1...Sf5
- 2.Rxe4#
- 1...cxd3!
- threat
- 1.Kg5?
- Keys
- 1.Sf4!
- 1...Kd4
- 2.Sc6#
- 1...Kxf4
- 2.Qd6#
- 1...Sf1
- 2.Rxe4#
- 1...Sh1
- 2.Rxe4#
- 1...Se2
- 2.Rxe4#
- 1...Sf5
- 2.Rxe4#
- 1...Sh5
- 2.Rxe4#
- 1...c3
- 2.Sd3#
- 1...Kd4
- 1.Sf4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD::R1(B),XP(c)
- P(b);N_GUARD::P(A)
- Tries
- Try
- K(F);P-FLIGHT
- Vars
- S(a);N_GUARD::R1(B),XP(c)
- P(b);N_GUARD::P(A)
- Refutation
- P(h);
- Try
- S(E);
- Vars
- K(f);N_GUARD,N_SPINP(c),P_SPINP(b),S_FLIGHT::S(G)
- K(f);N_GUARD,N_SPINP(c),S_FLIGHT::QAB(C)
- S(a);N_GUARD::R1(B),XP(c)
- Refutation
- P(b);
- Try
- S(E);
- Vars
- K(f);N_GUARD,N_SPINP(c),P_SPINP(b),S_FLIGHT::S(E)
- K(f);N_GUARD,N_SPINP(c),S_FLIGHT::QAB(C)
- S(a);N_GUARD::R1(B),XP(c)
- Refutation
- P(b);
- Try
- S(G);
- Threat
- QAB1(C)
- Vars
- K(f);N_SPINP(c),P-FLIGHT,XB(D)::QAR1(C)
- Refutation
- S(a);XS(G)
- Try
- S(G);
- Threat
- QAB1(C)
- Vars
- K(f);N_SPINP(c),P-FLIGHT,XB(D)::QAR1(C)
- Refutation
- S(a);
- Try
- B(D);XP(b)
- Threat
- DUALS(2)
- Vars
- S(a);::S(G)
- Refutation
- P(e);XB(D)
- Try
- R(B);N_PINP(c),XS(a)
- Vars
- P(c);OGATEB::R(B),XP(c)
- Refutation
- P(b);
- Try
- Q(C);
- Vars
- P(b);N_GUARD::P(A)
- S(a);N_GUARD::R1(B),XP(c)
- Refutation
- P(e);
- Try
- Q(C);
- Threat
- DUALS(2)
- Refutation
- P(g);XQ(C)
- Try
- P(A);
- Threat
- P(A)
- Vars
- S(a);N_GUARD::R1(B),XP(c)
- Refutation
- P(b);XP(A)
- Try
- Actual
- S(E);
- Vars
- K(f);N_GUARD,N_SPINP(c),P_SPINP(b),S_FLIGHT::S(G)
- K(f);N_GUARD,N_SPINP(c),S_FLIGHT,XS(E)::QAB(C)
- S(a);N_GUARD::R1(B),XP(c)
- P(b);N_GUARD::S(E)
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).