MESON Chess Problem Database
Problem Display
PID: 227416 (8/1Kp3B1/1nQ5/pNR5/pkP4p/pBNp3P/P3r1n1/1R3r1b w - - 0 1)
van Dooren, Rene
Schweizerische Schachzeitung, 1985
#2
11 + 12
SOLUTION
- SOUND
- Sets
- 1...Rff2
- 2.Bc2#
- 1...Rf3
- 2.Bc2#
- 1...Rf4
- 2.Bc2#
- 1...Rf5
- 2.Bc2#
- 1...Rf6
- 2.Bc2#
- 1...Rf7
- 2.Bc2#
- 1...Rf8
- 2.Bc2#
- 1...Re1
- 2.Bd1#
- 1...Rxa2
- 2.Sxa2#
- 1...Re3
- 2.Bd1#
- 1...Re4
- 2.Bd1#
- 1...Re5
- 2.Bd1#
- 1...Re6
- 2.Bd1#
- 1...Re7
- 2.Bd1#
- 1...Re8
- 2.Bd1#
- 1...Se1
- 2.Bc2#
- 1...Sxc4
- 2.Sd5#
- 2.Rxc4#
- 1...Sd5
- 2.Sxd5#
- 1...Sd7
- 2.Sd5#
- 1...Sa8
- 2.Sd5#
- 1...Sc8
- 2.Sd5#
- 1...d2
- 2.Bd1#
- 1...axb3
- 2.Rxb3#
- 1...Rff2
- Tries
- 1.Sd1?
- threat
- 2.Bc2#
- 2.Bc3#
- 1...Rxd1
- 2.Bc3#
- 1...Rxa2
- 2.Bxa2#
- 2.Bc3#
- 1...Sxc4
- 2.Bc3#
- 2.Rxc4#
- 1...Rf6
- 2.Bc2#
- 1...Rb2
- 2.Bc3#
- 1...Rc2
- 2.Bxc2#
- 1...Re5
- 2.Bc2#
- 1...Sd5
- 2.Bc2#
- 1...axb3!
- threat
- 1.Rd5?
- threat
- 2.Qc5#
- 1...Sxd5
- 2.Sxd5#
- 1...Sd7!
- threat
- 1.Re5?
- threat
- 2.Qc5#
- 1...Rxe5
- 2.Bd1#
- 1...Se1
- 2.Bc2#
- 1...Sf4
- 2.Bf8#
- 1...Sd5
- 2.Sxd5#
- 1...Sd7
- 2.Sd5#
- 1...Se3!
- threat
- 1.Rf5?
- threat
- 2.Qc5#
- 1...Rxf5
- 2.Bc2#
- 1...Re5
- 2.Bd1#
- 1...Se1
- 2.Bc2#
- 1...Se3
- 2.Bf8#
- 1...Sd5
- 2.Sxd5#
- 1...Sd7
- 2.Sd5#
- 1...Sf4!
- threat
- 1.Sd1?
- Keys
- 1.Bf8!
- 1...Rxb1
- 2.Re5#
- 1...Rxf8
- 2.Bc2#
- 1...Rxa2
- 2.Sxa2#
- 2.Rf5#
- 1...Sxc4
- 2.Sd5#
- 2.Rxc4#
- 1...axb3
- 2.Rxb3#
- 1...Rc1
- 2.Re5#
- 1...Rd1
- 2.Re5#
- 1...Rfe1
- 2.Re5#
- 1...Rg1
- 2.Re5#
- 1...Rff2
- 2.Bc2#
- 1...Rf3
- 2.Bc2#
- 1...Rf4
- 2.Bc2#
- 1...Rf5
- 2.Bc2#
- 1...Rf6
- 2.Bc2#
- 1...Rf7
- 2.Bc2#
- 1...Ree1
- 2.Bd1#
- 1...Rb2
- 2.Rf5#
- 1...Rc2
- 2.Rf5#
- 1...Rd2
- 2.Rf5#
- 1...Ref2
- 2.Rf5#
- 1...Re3
- 2.Bd1#
- 1...Re4
- 2.Bd1#
- 1...Re5
- 2.Bd1#
- 1...Re6
- 2.Bd1#
- 1...Re7
- 2.Bd1#
- 1...Re8
- 2.Bd1#
- 1...Se1
- 2.Bc2#
- 1...Se3
- 2.Rf5#
- 1...Sf4
- 2.Re5#
- 1...Sd5
- 2.Sxd5#
- 1...Sd7
- 2.Sd5#
- 1...Sa8
- 2.Sd5#
- 1...Sc8
- 2.Sd5#
- 1...d2
- 2.Bd1#
- 1...Rxb1
- 1.Bf8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 11
- REMOVED MATES = 1
- Sets
- R(a);N_GUARD::R(A)+B(C)
- R(c);N_GUARD::R(A)+B(C)
- R(c);XP(B)::S(D),XR(c)
- S(d);P_PINQ(I),S_CUTR(a)::R(A)+B(C)
- S(k);N_GUARD::S(D),XS(k)
- S(k);N_GUARD::S(D)
- P(f);S_CUTR(c)::R(A)+B(C)
- P(g);OGATE,P_SPINP(g),XB(C)::R1(A),XP(g)
- Tries
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- R(a);XS(D)::B(K)
- R(a);::R(A)+B(C)
- R(c);::B(K)
- R(c);::R(A)+B(C),XR(c)
- R(c);::R(A)+B(C)
- S(k);::R(A)+B(C)
- Refutation
- P(g);P_SPINP(g),XB(C)
- Try
- R(H);
- Threat
- QAB1(I)
- Vars
- S(k);XR(H)::S(D),XS(k)
- Refutation
- S(k);
- Try
- R(H);
- Threat
- QAB1(I)
- Vars
- R(c);N_GUARD,XR(H)::R(A)+B(C)
- S(d);P_PINQ(I),S_CUTR(a)::R(A)+B(C)
- S(d);P_PINQ(I),S_CUTR(a)::B(K)
- S(k);N_GUARD::S(D),XS(k)
- S(k);N_GUARD::S(D)
- Refutation
- S(d);P_PINQ(I)
- Try
- R(H);
- Threat
- QAB1(I)
- Vars
- R(a);N_GUARD,XR(H)::R(A)+B(C)
- R(c);N_GUARD::R(A)+B(C)
- S(d);P_PINQ(I),S_CUTR(a)::R(A)+B(C)
- S(d);P_PINQ(I),S_CUTR(c)::B(K)
- S(k);N_GUARD::S(D),XS(k)
- S(k);N_GUARD::S(D)
- Refutation
- S(d);P_PINQ(I)
- Try
- Actual
- B(K);
- Vars
- R(a);N_GUARD,XR(A)::B(K)+R(H)
- R(a);N_GUARD,XB(K)::R(A)+B(C)
- P(g);OGATE,P_SPINP(g),XB(C)::R1(A),XP(g)
- R(a);N_GUARD::B(K)+R(H)
- R(a);N_GUARD::R(A)+B(C)
- R(c);N_GUARD::R(A)+B(C)
- R(c);N_GUARD::B(K)+R(H)
- S(d);P_PINQ(I),S_CUTR(a)::R(A)+B(C)
- S(d);P_PINQ(I),S_CUTR(c)::B(K)+R(H)
- S(d);P_PINQ(I),S_CUTR(a)::B(K)+R(H)
- S(k);N_GUARD::S(D),XS(k)
- S(k);N_GUARD::S(D)
- P(f);S_CUTR(c)::R(A)+B(C)
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).