MESON Chess Problem Database
Problem Display
PID: 232429 (8/1n1r1n2/8/1R1R4/N1k1r1N1/Pp6/2q1P2K/2QB3b w - - 0 1)
Degenkolbe, Mirko
Freie Presse, 1981
#2
9 + 8
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qxc1
- 2.Bxb3#
- 1...Qc3
- 2.Sb2#
- 2.Sb6#
- 2.Bxb3#
- 2.Qxc3#
- 1...Rxe2+
- 2.Bxe2#
- 1...Re3
- 2.Sxe3#
- 1...Rd4
- 2.Se3#
- 1...Rf4
- 2.Se3#
- 1...Rxd5
- 2.Rb4#
- 1...Sa5
- 2.Rbc5#
- 1...Sc5
- 2.Rbxc5#
- 1...Sbd6
- 2.Rbc5#
- 1...Sbd8
- 2.Rbc5#
- 1...b2
- 2.Qxc2#
- 1...Qxc1
- Tries
- 1.Sf6?
- threat
- 2.Rb4#
- 1...Rxe2+
- 2.Bxe2#
- 1...Rh4+!
- threat
- 1.Bxc2?
- threat
- 2.Bb1#
- 2.Bd1#
- 2.Bxb3#
- 2.Bd3#
- 2.Bxe4#
- 1...Rxg4
- 2.Bb1#
- 2.Bd1#
- 2.Bxb3#
- 2.Bd3#
- 2.Be4#
- 2.Bf5#
- 2.Bg6#
- 2.Bh7#
- 1...Rxd5
- 2.Rb4#
- 1...bxc2
- 2.Qxc2#
- 1...Sc5
- 2.Rbxc5#
- 1...Re3
- 2.Sxe3#
- 2.Bxb3#
- 2.Bd3#
- 1...Rd4
- 2.Se3#
- 2.Bb1#
- 2.Bd1#
- 2.Bxb3#
- 2.Bd3#
- 2.Be4#
- 2.Bf5#
- 2.Bg6#
- 2.Bh7#
- 1...Rf4
- 2.Se3#
- 2.Bb1#
- 2.Bd1#
- 2.Bxb3#
- 2.Bd3#
- 2.Be4#
- 2.Bf5#
- 2.Bg6#
- 2.Bh7#
- 1...Re5
- 2.Bb1#
- 2.Bd1#
- 2.Bxb3#
- 2.Bd3#
- 2.Be4#
- 2.Bf5#
- 2.Bg6#
- 2.Bh7#
- 1...Re6
- 2.Bb1#
- 2.Bd1#
- 2.Bxb3#
- 2.Bd3#
- 2.Be4#
- 2.Bf5#
- 2.Bg6#
- 2.Bh7#
- 1...Ree7
- 2.Bb1#
- 2.Bd1#
- 2.Bxb3#
- 2.Bd3#
- 2.Be4#
- 2.Bf5#
- 2.Bg6#
- 2.Bh7#
- 1...Re8
- 2.Bb1#
- 2.Bd1#
- 2.Bxb3#
- 2.Bd3#
- 2.Be4#
- 2.Bf5#
- 2.Bg6#
- 2.Bh7#
- 1...b2
- 2.Bb3#
- 2.Bd3#
- 1...Rxe2+!
- threat
- 1.Qd2?
- threat
- 2.Sb6#
- 2.Rb4#
- 2.Qb4#
- 1...Qxd2
- 2.Bxb3#
- 1...Rxd5
- 2.Rb4#
- 2.Qb4#
- 2.Qxd5#
- 1...Sc5
- 2.Rb4#
- 2.Rbxc5#
- 2.Rdxc5#
- 1...Qd3
- 2.Sb2#
- 2.Sb6#
- 2.Qb4#
- 2.Qxd3#
- 2.exd3#
- 1...Qc3
- 2.Sb6#
- 2.Qxc3#
- 1...Rd4
- 2.Sb6#
- 2.Se3#
- 2.Qb4#
- 2.Qxd4#
- 1...Re6
- 2.Rb4#
- 2.Qb4#
- 2.Qd4#
- 1...Rd6
- 2.Rb4#
- 2.Qb4#
- 1...Rxe2+!
- threat
- 1.Qe3?
- threat
- 2.Sb6#
- 1...Qxe2+
- 2.Bxe2#
- 1...Rxe3
- 2.Sxe3#
- 1...Rxd5
- 2.Rb4#
- 1...Sc5
- 2.Rbxc5#
- 2.Rdxc5#
- 2.Qxc5#
- 1...Qd3
- 2.Qxd3#
- 2.exd3#
- 1...Re6
- 2.Qd4#
- 1...Rd6!
- threat
- 1.Sf6?
- Keys
- 1.Qf4!
- threat
- 2.Se3#
- 1...Qxe2+
- 2.Bxe2#
- 1...Rxd5
- 2.Rb4#
- 1...Sc5
- 2.Rbxc5#
- 1...Qd3
- 2.exd3#
- 1...Qc1
- 2.Bxb3#
- 2.Qxc1#
- 1...Qd2
- 2.Bxb3#
- 1...Qc3
- 2.Sb6#
- threat
- 1.Qf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 9
- Sets
- Q(b);N_PINP(C),N_SPINQ(b),OGATE,XQ(A)::B(B),XP(c)
- R(e);CHECK,OGATE,XP(C)::B(B),XR(e)
- R(e);N_GUARD::S(G),XR(e)
- R(e);N_GUARD::S(G)
- R(g);SBLOCK,XR(I)::R1(H)
- S(f);N_GUARD::R1(H)
- S(f);N_GUARD::R1(H),XS(f)
- P(c);N_GUARD::QAR2(A),XQ(b)
- Tries
- Try
- S(G);
- Threat
- R1(H)
- Vars
- R(e);CHECK,OGATE,XP(C)::B(B),XR(e)
- Refutation
- R(e);CHECK
- Try
- B(B);N_SPINP(C),XQ(b)
- Threat
- DUALS(5)
- Vars
- R(g);SBLOCK,XR(I)::R1(H)
- P(c);OGATE,P_SPINP(c),XB(B)::QAR2(A),XP(c)
- S(f);N_GUARD::R1(H),XS(f)
- Refutation
- R(e);CHECK,XP(C)
- Try
- Q(A);N_PINQ(b),N_SPINP(C)
- Threat
- DUALS(3)
- Vars
- Q(b);OGATE,P_PINP(C),XQ(A)::B(B),XP(c)
- Refutation
- R(e);CHECK,XP(C)
- Try
- Q(A);N_PINQ(b)
- Threat
- S(F)
- Vars
- Q(b);CHECK,OGATE,XP(C)::B(B),XQ(b)
- R(e);XQ(A)::S(G),XR(e)
- R(g);SBLOCK,XR(I)::R1(H)
- R(e);N_GUARD::QAR1(A)
- Refutation
- R(g);
- Try
- Actual
- Q(A);N_PINQ(b),P_PINR(e)
- Threat
- S(G)
- Vars
- Q(b);CHECK,OGATE,XP(C)::B(B),XQ(b)
- R(g);SBLOCK,XR(I)::R1(H)
- S(f);N_GUARD::R1(H),XS(f)
- Q(b);N_PINP(C)::P(C),XQ(b)
- Q(b);OGATE::B(B),XP(c)
- Q(b);N_PINP(C),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).