MESON Chess Problem Database
Problem Display
PID: 178149 (2K2B2/p5P1/Rb2P1N1/1P1k4/R7/8/2P1P1P1/1Qn2B2 w - - 0 1)
Rajagopalan, N
Schach-Echo, 1982
#2
13 + 4
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Bg1
- 2.e4#
- 1...Bf2
- 2.e4#
- 1...Bd4
- 2.c4#
- 1...Ba5
- 2.e4#
- 1...Bc5
- 2.e4#
- 1...Bc7
- 2.e4#
- 1...Bd8
- 2.e4#
- 1...Sa2
- 2.Qxa2#
- 2.Qb3#
- 1...Sxe2
- 2.Qa2#
- 2.Qb3#
- 1...Sb3
- 2.Qxb3#
- 1...Sd3
- 2.Qa2#
- 2.Qb3#
- 1...Bg1
- Tries
- 1.Kd7?
- threat
- 2.e4#
- 1...Sxe2
- 2.Qa2#
- 2.Qb3#
- 1...Bd4
- 2.c4#
- 1...Be3!
- threat
- 1.Ba3?
- 1...Sxe2
- 2.Qa2#
- 2.Qb3#
- 1...Be3
- 2.Rd6#
- 1...Bg1
- 2.Rd6#
- 2.e4#
- 1...Bf2
- 2.Rd6#
- 2.e4#
- 1...Bd4
- 2.c4#
- 1...Ba5
- 2.Rd6#
- 2.e4#
- 1...Bc5
- 2.e4#
- 1...Bc7
- 2.e4#
- 1...Bd8
- 2.Rd6#
- 2.e4#
- 1...Sa2
- 2.Qxa2#
- 2.Qb3#
- 1...Sb3
- 2.Qxb3#
- 1...Sd3
- 2.Qa2#
- 2.Qb3#
- 1...Kxe6!
- 1...Sxe2
- 1.Rg4?
- 1...Sxe2
- 2.Qa2#
- 2.Qb3#
- 1...Be3
- 2.c4#
- 1...Bg1
- 2.c4#
- 1...Bf2
- 2.c4#
- 1...Bd4
- 2.e4#
- 1...Ba5
- 2.c4#
- 1...Bc5
- 2.c4#
- 1...Bc7
- 2.c4#
- 1...Bd8
- 2.c4#
- 1...Sa2
- 2.Qxa2#
- 2.Qb3#
- 1...Sb3
- 2.Qxb3#
- 1...Sd3
- 2.Qa2#
- 2.Qb3#
- 1...Kxe6!
- 1...Sxe2
- 1.Rh4?
- 1...Sxe2
- 2.Qa2#
- 2.Qb3#
- 1...Be3
- 2.c4#
- 1...Bg1
- 2.c4#
- 1...Bf2
- 2.c4#
- 1...Bd4
- 2.e4#
- 1...Ba5
- 2.c4#
- 1...Bc5
- 2.c4#
- 1...Bc7
- 2.c4#
- 1...Bd8
- 2.c4#
- 1...Sa2
- 2.Qxa2#
- 2.Qb3#
- 1...Sb3
- 2.Qxb3#
- 1...Sd3
- 2.Qa2#
- 2.Qb3#
- 1...Kxe6!
- 1...Sxe2
- 1.Rxb6?
- threat
- 2.e4#
- 1...Sxe2
- 2.Qa2#
- 2.Qb3#
- 1...axb6!
- threat
- 1.Qa2+?
- 1...Sb3
- 2.Qxb3#
- 1...Sxa2!
- 1...Sb3
- 1.Qa1?
- threat
- 2.Sf4#
- 2.Qe5#
- 1...Sxe2
- 2.Qe5#
- 2.Qa2#
- 1...Be3
- 2.Qe5#
- 1...Bd4
- 2.Rxd4#
- 2.Qxd4#
- 1...Bc7
- 2.Rd4#
- 2.Qd4#
- 2.e4#
- 1...Sd3
- 2.Qa2#
- 1...Kxe6!
- threat
- 1.Qb2?
- threat
- 2.Sf4#
- 2.Qe5#
- 1...Sxe2
- 2.Qe5#
- 2.Qa2#
- 2.Qb3#
- 1...Be3
- 2.Qe5#
- 1...Bd4
- 2.Rxd4#
- 2.Qxd4#
- 1...Bc7
- 2.Rd4#
- 2.Qd4#
- 2.e4#
- 1...Sd3
- 2.Qa2#
- 2.Qb3#
- 1...Kxe6!
- threat
- 1.Qb4?
- threat
- 2.Qd6#
- 2.Qc4#
- 2.Qe4#
- 1...Bd4
- 2.Qxd4#
- 1...Bc5
- 2.Qxc5#
- 2.Qc4#
- 2.Qe4#
- 2.e4#
- 1...Bc7
- 2.Qc5#
- 2.Qc4#
- 2.Qd4#
- 2.Qe4#
- 2.e4#
- 1...Kxe6!
- threat
- 1.c3?
- threat
- 2.Qe4#
- 2.Qf5#
- 1...Bd4
- 2.Rxd4#
- 2.e4#
- 2.c4#
- 1...Bc7
- 2.Rd4#
- 2.Qe4#
- 2.e4#
- 1...Sd3
- 2.Qa2#
- 2.Qb3#
- 1...Kxe6!
- threat
- 1.g3?
- 1...Sxe2
- 2.Qa2#
- 2.Qb3#
- 1...Be3
- 2.Bg2#
- 1...Bg1
- 2.Bg2#
- 2.e4#
- 1...Bf2
- 2.Bg2#
- 2.e4#
- 1...Bd4
- 2.Bg2#
- 2.c4#
- 1...Ba5
- 2.Bg2#
- 2.e4#
- 1...Bc5
- 2.Bg2#
- 2.e4#
- 1...Bc7
- 2.Bg2#
- 2.e4#
- 1...Bd8
- 2.Bg2#
- 2.e4#
- 1...Sa2
- 2.Qxa2#
- 2.Qb3#
- 1...Sb3
- 2.Qxb3#
- 1...Sd3
- 2.Qa2#
- 2.Qb3#
- 1...Kxe6!
- 1...Sxe2
- 1.g4?
- 1...Sxe2
- 2.Qa2#
- 2.Qb3#
- 1...Be3
- 2.Bg2#
- 1...Bg1
- 2.Bg2#
- 2.e4#
- 1...Bf2
- 2.Bg2#
- 2.e4#
- 1...Bd4
- 2.Bg2#
- 2.c4#
- 1...Ba5
- 2.Bg2#
- 2.e4#
- 1...Bc5
- 2.Bg2#
- 2.e4#
- 1...Bc7
- 2.Bg2#
- 2.e4#
- 1...Bd8
- 2.Bg2#
- 2.e4#
- 1...Sa2
- 2.Qxa2#
- 2.Qb3#
- 1...Sb3
- 2.Qxb3#
- 1...Sd3
- 2.Qa2#
- 2.Qb3#
- 1...Kxe6!
- 1...Sxe2
- 1.g8Q?
- threat
- 2.e4#
- 1...Sxe2
- 2.Qa2#
- 2.Qb3#
- 1...Bd4
- 2.c4#
- 1...Be3!
- threat
- 1.g8S?
- 1...Sxe2
- 2.Qa2#
- 2.Qb3#
- 1...Be3
- 2.Sf6#
- 1...Bg1
- 2.Sf6#
- 2.e4#
- 1...Bf2
- 2.Sf6#
- 2.e4#
- 1...Bd4
- 2.c4#
- 1...Ba5
- 2.Sf6#
- 2.e4#
- 1...Bc5
- 2.Sf6#
- 2.e4#
- 1...Bc7
- 2.Sf6#
- 2.e4#
- 1...Bd8
- 2.e4#
- 1...Sa2
- 2.Qxa2#
- 2.Qb3#
- 1...Sb3
- 2.Qxb3#
- 1...Sd3
- 2.Qa2#
- 2.Qb3#
- 1...Kxe6!
- 1...Sxe2
- 1.g8B?
- threat
- 2.e4#
- 1...Sxe2
- 2.Qa2#
- 2.Qb3#
- 1...Bd4
- 2.c4#
- 1...Be3!
- threat
- 1.Kd7?
- Keys
- 1.Rf4!
- 1...Kxe6
- 2.g8Q#
- 2.g8B#
- 1...Sxe2
- 2.Qa2#
- 2.Qb3#
- 1...Be3
- 2.c4#
- 1...Bg1
- 2.c4#
- 1...Bf2
- 2.c4#
- 1...Bd4
- 2.e4#
- 1...Ba5
- 2.c4#
- 1...Bc5
- 2.c4#
- 1...Bc7
- 2.c4#
- 1...Bd8
- 2.c4#
- 1...Sa2
- 2.Qxa2#
- 2.Qb3#
- 1...Sb3
- 2.Qxb3#
- 1...Sd3
- 2.Qa2#
- 2.Qb3#
- 1...Kxe6
- 1.Rf4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 7
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- B(c);::P(D)
- B(c);SBLOCK::P(C)
- S(a);N_GUARD::QAB(A),XS(a)
- Tries
- Try
- K(L);S_FLIGHT
- Threat
- P(D)
- Vars
- B(c);SBLOCK::P(C)
- Refutation
- B(c);
- Try
- B(M);
- Vars
- B(c);OGATE::R1(H)
- B(c);SBLOCK::P(C)
- B(c);::P(D)
- S(a);N_GUARD::QAB(A),XS(a)
- Refutation
- K(b);P_SPINB(c),S_FLIGHT,XP(I)
- Try
- R(F);
- Vars
- B(c);::P(C)
- B(c);SBLOCK::P(D)
- S(a);N_GUARD::QAB(A),XS(a)
- Refutation
- K(b);P_SPINB(c),S_FLIGHT,XP(I)
- Try
- R(F);
- Vars
- B(c);::P(C)
- B(c);SBLOCK::P(D)
- S(a);N_GUARD::QAB(A),XS(a)
- Refutation
- K(b);P_SPINB(c),S_FLIGHT,XP(I)
- Try
- R(H);XB(c)
- Threat
- P(D)
- Refutation
- P(d);XR(H)
- Try
- Q(A);CHECK
- Vars
- S(a);N_GUARD,P_SPINS(a)::QAB(A),XS(a)
- Refutation
- S(a);XQ(A)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- B(c);::QAR1(A)
- S(a);N_GUARD::QAB(A)
- Refutation
- K(b);P_SPINB(c),S_FLIGHT,XP(I)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- B(c);::QAR1(A)
- Refutation
- K(b);P_SPINB(c),S_FLIGHT,XP(I)
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- B(c);N_GUARD::QAR1(A),XB(c)
- Refutation
- K(b);P_SPINB(c),S_FLIGHT,XP(I)
- Try
- P(C);
- Threat
- DUALS(2)
- Refutation
- K(b);P_SPINB(c),S_FLIGHT,XP(I)
- Try
- P(E);
- Vars
- B(c);::B(B)
- S(a);N_GUARD::QAB(A),XS(a)
- Refutation
- K(b);P_SPINB(c),S_FLIGHT,XP(I)
- Try
- P(E);
- Vars
- B(c);::B(B)
- S(a);N_GUARD::QAB(A),XS(a)
- Refutation
- K(b);P_SPINB(c),S_FLIGHT,XP(I)
- Try
- P(K);
- Threat
- P(D)
- Vars
- B(c);SBLOCK::P(C)
- Refutation
- B(c);
- Try
- P(K);
- Vars
- B(c);::S(K)
- B(c);SBLOCK::P(C)
- B(c);::P(D)
- S(a);N_GUARD::QAB(A),XS(a)
- Refutation
- K(b);P_SPINB(c),S_FLIGHT,XP(I)
- Try
- P(K);
- Threat
- P(D)
- Vars
- B(c);SBLOCK::P(C)
- Refutation
- B(c);
- Try
- Actual
- R(F);
- Vars
- K(b);P_SPINB(c),S_FLIGHT,XP(I)::P=Q
- B(c);::P(C)
- B(c);SBLOCK::P(D)
- S(a);N_GUARD::QAB(A),XS(a)
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).