MESON Chess Problem Database
Problem Display
PID: 38980 (8/rP1Q3K/3N1pP1/3kp3/1P1nN3/5rp1/2b5/2RRn3 w - - 0 1)
Dutt, Sunder Chunder
8th Comm., BCF 019. Ty., 1935-1936
#2
9 + 9
SOLUTION
- SOUND
- Sets
- 1...Rf1
- 2.Sc3#
- 1...Rf2
- 2.Sc3#
- 1...Rfa3
- 2.Sxf6#
- 1...Rb3
- 2.Sxf6#
- 1...Rc3
- 2.Sxc3#
- 2.Sxf6#
- 1...Rd3
- 2.Sxf6#
- 1...Re3
- 2.Sxf6#
- 1...Rf4
- 2.Sc3#
- 1...Rf5
- 2.Sc3#
- 1...Ra8
- 2.bxa8Q#
- 2.bxa8B#
- 1...Bb1
- 2.Rc5#
- 2.Qf7#
- 1...Bxd1
- 2.Rc5#
- 1...Bb3
- 2.Rc5#
- 2.Qf7#
- 1...Bd3
- 2.Sc3#
- 2.Rc5#
- 1...Ba4
- 2.Rc5#
- 2.Qf7#
- 1...Bxe4
- 2.Sc4#
- 2.Sb5#
- 2.Sf5#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 2.Rc5#
- 1...Sd3
- 2.Sc3#
- 1...f5
- 2.Sf6#
- 1...Rf1
- Tries
- 1.Rxc2?
- threat
- 2.Rc5#
- 2.Qf7#
- 1...Rxb7
- 2.Rc5#
- 1...Rc3
- 2.Sxc3#
- 2.Sxf6#
- 1...Rd3
- 2.Sxf6#
- 2.Rc5#
- 1...Ra5
- 2.Qf7#
- 1...Sd3
- 2.Sc3#
- 1...Sxc2!
- threat
- 1.Rd3?
- threat
- 2.Sc3#
- 1...Rxd3
- 2.Sxf6#
- 1...Ra3!
- threat
- 1.b8Q?
- threat
- 2.Qb5#
- 2.Qg8#
- 1...Bxd1
- 2.Rc5#
- 1...Rc3
- 2.Sxc3#
- 2.Sxf6#
- 2.Qg8#
- 1...Rd3
- 2.Sxf6#
- 1...Ra5
- 2.Qbb7#
- 2.Qg8#
- 1...Rb7
- 2.Qbxb7#
- 2.Qg8#
- 1...Rc7
- 2.Qg8#
- 1...Ra8
- 2.Qbb5#
- 2.Qbb7#
- 2.Qxa8#
- 1...Bd3
- 2.Sc3#
- 2.Rc5#
- 1...Ba4
- 2.Rc5#
- 2.Qg8#
- 1...Sd3
- 2.Sc3#
- 1...Rxd7+!
- threat
- 1.Rxc2?
- Keys
- 1.g7!
- threat
- 2.g8Q#
- 2.g8B#
- 1...Bxe4+
- 2.Sf5#
- 1...Rxb7
- 2.g8Q#
- 2.g8B#
- 1...Bxd1
- 2.Rc5#
- 1...Ra1
- 2.g8Q#
- 2.g8B#
- 1...Rf1
- 2.g8Q#
- 2.g8B#
- 1...Rf2
- 2.g8Q#
- 2.g8B#
- 1...Rfa3
- 2.g8Q#
- 2.g8B#
- 1...Rb3
- 2.g8Q#
- 2.g8B#
- 1...Rc3
- 2.g8Q#
- 2.g8B#
- 1...Rd3
- 2.Sxf6#
- 1...Re3
- 2.g8Q#
- 2.g8B#
- 1...Rf4
- 2.g8Q#
- 2.g8B#
- 1...Rf5
- 2.Sc3#
- 2.g8Q#
- 2.g8B#
- 1...Ra2
- 2.g8Q#
- 2.g8B#
- 1...Raa3
- 2.g8Q#
- 2.g8B#
- 1...Ra4
- 2.g8Q#
- 2.g8B#
- 1...Ra5
- 2.g8Q#
- 2.g8B#
- 1...Ra6
- 2.g8Q#
- 2.g8B#
- 1...Ra8
- 2.bxa8Q#
- 2.bxa8B#
- 1...Bb1
- 2.Rc5#
- 2.Qf7#
- 2.g8Q#
- 2.g8B#
- 1...Bb3
- 2.Rc5#
- 2.Qf7#
- 2.g8Q#
- 2.g8B#
- 1...Bd3
- 2.Rc5#
- 1...Ba4
- 2.Rc5#
- 2.Qf7#
- 2.g8Q#
- 2.g8B#
- 1...Sg2
- 2.g8Q#
- 2.g8B#
- 1...Sd3
- 2.Sc3#
- 1...g2
- 2.g8Q#
- 2.g8B#
- 1...f5
- 2.Sf6#
- 2.g8Q#
- 2.g8B#
- threat
- 1.g7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 8
- Sets
- R(c);N_GUARD::S(D)
- R(c);N_GUARD::S(D),XP(h)
- R(c);N_GUARD,N_SPINS(e)::S(D),XP(h)
- R(i);OGATE::PXR(i)=Q
- B(b);N_SPINS(e),OGATE,XR(B)::R1(A)
- S(a);N_SPINS(e),S_CUTR(c)::S(D)
- P(h);S_CUTR(c)::S(D)
- Tries
- Try
- R(A);XB(b)
- Threat
- DUALS(2)
- Vars
- R(i);P_PINQ(H),XP(G)::R1(A)
- R(i);::QAB(H)
- S(a);N_SPINS(e),S_CUTR(c)::S(D)
- Refutation
- S(a);XR(A)
- Try
- R(B);
- Threat
- S(D)
- Vars
- R(c);N_GUARD,N_SPINS(e),XR(B)::S(D),XP(h)
- Refutation
- R(i);
- Try
- P(G);P_SPINQ(H)
- Threat
- DUALS(2)
- Vars
- B(b);N_SPINS(e),OGATE,XR(B)::R1(A)
- R(c);N_GUARD,N_SPINS(e)::S(D),XP(h)
- R(i);::QAB(G)
- S(a);N_SPINS(e),S_CUTR(c)::S(D)
- Refutation
- R(i);CHECK,XQ(H)
- Try
- Actual
- P(F);P_SPINS(D)
- Threat
- P=Q
- Vars
- B(b);CHECK,SBLOCK,XS(D)::QAR(H)+S(E)
- R(i);XP(G)::P=Q
- B(b);N_PINS(D),N_SPINS(e),OGATE,XR(B)::R1(A)
- R(i);::P=Q
- R(c);::P=Q
- R(c);N_PINS(D),N_SPINS(e)::S(D),XP(h)
- R(i);OGATE::PXR(i)=Q
- B(b);N_SPINS(e),OGATE::R1(A)
- S(a);::P=Q
- S(a);N_PINS(D),N_SPINS(e)::S(D)
- P(d);::P=Q
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).