MESON Chess Problem Database
Problem Display
PID: 165899 (8/8/3p2p1/B1bQ1bP1/Np1p1K2/3p2N1/2Pkr1R1/1B5R w - - 0 1)
Forster, Klaus
Die Schwalbe, 2017
#2
10 + 9
SOLUTION
- SOUND
- Sets
- 1...Rf2+
- 2.Rxf2#
- 1...Rxg2
- 2.Qxg2#
- 1...Bb6
- 2.Bxb4#
- 1...Ba7
- 2.Bxb4#
- 1...Bh3
- 2.Se4#
- 1...Be4
- 2.Sxe4#
- 1...Bg4
- 2.Se4#
- 1...Be6
- 2.Se4#
- 1...Bd7
- 2.Se4#
- 1...Bc8
- 2.Se4#
- 1...Rf2+
- Tries
- 1.Rf1?
- 1...Rf2+
- 2.Rgxf2#
- 1...Rxg2
- 2.Qxg2#
- 1...Bb6
- 2.Bxb4#
- 1...Ba7
- 2.Bxb4#
- 1...Bh3
- 2.Se4#
- 1...Be4
- 2.Sxe4#
- 1...Bg4
- 2.Se4#
- 1...Be6
- 2.Se4#
- 1...Bd7
- 2.Se4#
- 1...Bc8
- 2.Se4#
- 1...dxc2!
- 1...Rf2+
- 1.Rhg1?
- 1...Rf2+
- 2.Rxf2#
- 1...Rxg2
- 2.Qxg2#
- 1...Bb6
- 2.Bxb4#
- 1...Ba7
- 2.Bxb4#
- 1...Bh3
- 2.Se4#
- 1...Be4
- 2.Sxe4#
- 1...Bg4
- 2.Se4#
- 1...Be6
- 2.Se4#
- 1...Bd7
- 2.Se4#
- 1...Bc8
- 2.Se4#
- 1...dxc2!
- 1...Rf2+
- 1.Qa2?
- threat
- 2.cxd3#
- 2.c3#
- 2.c4#
- 1...Rf2+
- 2.Rxf2#
- 1...Be6
- 2.Se4#
- 2.c4#
- 1...dxc2!
- threat
- 1.Qf3?
- 1...Rxg2
- 2.Rd1#
- 2.Qd1#
- 2.Qxg2#
- 1...dxc2
- 2.Rxe2#
- 2.Qxe2#
- 1...Bb6
- 2.Bxb4#
- 1...Rf2
- 2.Rd1#
- 2.Rxf2#
- 2.Qxf2#
- 1...Ba7
- 2.Bxb4#
- 1...Bh3
- 2.Se4#
- 2.Qxd3#
- 1...Be4
- 2.Sxe4#
- 1...Bg4
- 2.Se4#
- 2.Qxd3#
- 1...Be6
- 2.Se4#
- 2.Qxd3#
- 1...Bd7
- 2.Se4#
- 2.Qxd3#
- 1...Bc8
- 2.Se4#
- 2.Qxd3#
- 1...d5!
- 1...Rxg2
- 1.Qe4?
- 1...Rf2+
- 2.Rxf2#
- 1...Rxg2
- 2.Qxg2#
- 2.Qe1#
- 1...Bxe4
- 2.Sxe4#
- 1...dxc2
- 2.Rxe2#
- 2.Qxe2#
- 1...Bb6
- 2.Bxb4#
- 1...Ba7
- 2.Bxb4#
- 1...Bh3
- 2.Qxd3#
- 1...Bg4
- 2.Qxd3#
- 1...Be6
- 2.Qxd3#
- 1...Bd7
- 2.Qxd3#
- 1...Bc8
- 2.Qxd3#
- 1...d5!
- 1...Rf2+
- 1.Qe6?
- 1...Rf2+
- 2.Rxf2#
- 1...Rxg2
- 2.Qe1#
- 1...Bxe6
- 2.Se4#
- 1...dxc2
- 2.Qxe2#
- 1...Bb6
- 2.Bxb4#
- 1...Ba7
- 2.Bxb4#
- 1...Bh3
- 2.Se4#
- 1...Be4
- 2.Sxe4#
- 1...Bg4
- 2.Se4#
- 1...d5!
- 1...Rf2+
- 1.Qxf5?
- threat
- 2.Se4#
- 2.Qxd3#
- 1...Rf2+
- 2.Rxf2#
- 1...Rxg2
- 2.Qxd3#
- 1...dxc2
- 2.Rxe2#
- 2.Qxc2#
- 1...d5
- 2.Qxd3#
- 1...gxf5!
- threat
- 1.cxd3?
- threat
- 2.Rxe2#
- 2.Qa2#
- 1...Rf2+
- 2.Rxf2#
- 1...Rxg2
- 2.Qa2#
- 2.Qxg2#
- 1...Bg4
- 2.Se4#
- 2.Qa2#
- 1...Be6
- 2.Se4#
- 2.Rxe2#
- 1...Bxd3!
- threat
- 1.c3?
- threat
- 2.Qa2#
- 1...Rf2+
- 2.Rxf2#
- 1...dxc3
- 2.Rxe2#
- 1...Be6
- 2.Se4#
- 1...b3!
- threat
- 1.Rf1?
- Keys
- 1.c4!
- 1...Rf2+
- 2.Rxf2#
- 1...Rxg2
- 2.Qxg2#
- 1...bxc4 ep
- 2.Qa2#
- 1...dxc4 ep
- 2.Rxe2#
- 1...Bb6
- 2.Bxb4#
- 1...Ba7
- 2.Bxb4#
- 1...Bh3
- 2.Se4#
- 1...Be4
- 2.Sxe4#
- 1...Bg4
- 2.Se4#
- 1...Be6
- 2.Se4#
- 1...Bd7
- 2.Se4#
- 1...Bc8
- 2.Se4#
- 1...Rf2+
- 1.c4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- R(b);CHECK,OGATEB::R(D),XR(b)
- R(b);N_SPINR(b),OGATE,XR(D)::QAR(I),XR(b)
- B(f);N_GUARD::B(H),XP(d)
- B(g);N_GUARD::S(E)
- B(g);N_GUARD::S(E),XB(g)
- Tries
- Try
- R(B);
- Vars
- R(b);CHECK,OGATEB::R(D),XR(b)
- R(b);N_SPINR(b),OGATE,XR(D)::QAR(I),XR(b)
- B(f);N_GUARD::B(H),XP(d)
- B(g);N_GUARD::S(E)
- B(g);N_GUARD::S(E),XB(g)
- Refutation
- P(c);XP(C)
- Try
- R(B);
- Vars
- R(b);CHECK,OGATEB::R(D),XR(b)
- R(b);N_SPINR(b),OGATE,XR(D)::QAR(I),XR(b)
- B(f);N_GUARD::B(H),XP(d)
- B(g);N_GUARD::S(E)
- B(g);N_GUARD::S(E),XB(g)
- Refutation
- P(c);XP(C)
- Try
- Q(I);
- Threat
- DUALS(3)
- Vars
- R(b);CHECK,OGATEB::R(D),XR(b)
- Refutation
- P(c);N_SPINP(d),P_SPINP(c),XP(C)
- Try
- Q(I);
- Vars
- B(f);N_GUARD::B(H),XP(d)
- B(g);N_GUARD::S(E),XB(g)
- Refutation
- P(h);
- Try
- Q(I);
- Vars
- R(b);CHECK,OGATEB::R(D),XR(b)
- B(g);XQ(I)::S(E),XB(g)
- B(f);N_GUARD::B(H),XP(d)
- B(g);N_GUARD::QAR1(I),XP(c)
- Refutation
- P(h);
- Try
- Q(I);
- Vars
- R(b);CHECK,OGATEB::R(D),XR(b)
- R(b);N_SPINR(b),OGATE,XR(D)::QAB1(I)
- B(g);N_GUARD,XQ(I)::S(E)
- P(c);N_GUARD,XP(C)::QAR1(I),XR(b)
- B(f);N_GUARD::B(H),XP(d)
- B(g);N_GUARD::S(E)
- B(g);N_GUARD::S(E),XB(g)
- Refutation
- P(h);
- Try
- Q(I);XB(g)
- Threat
- DUALS(2)
- Vars
- R(b);CHECK,OGATEB::R(D),XR(b)
- R(b);N_SPINR(b),XR(D)::QAR1(I),XP(c)
- P(h);::QAR1(I),XP(c)
- Refutation
- P(i);XQ(I)
- Try
- P(C);XP(c)
- Threat
- DUALS(2)
- Vars
- R(b);CHECK,OGATEB::R(D),XR(b)
- Refutation
- B(g);XP(C)
- Try
- P(C);N_PINP(d)
- Threat
- QAR(I)
- Vars
- R(b);CHECK,OGATEB::R(D),XR(b)
- P(e);P_SPINP(c),XP(C)::R1(D),XR(b)
- B(g);N_GUARD::S(E)
- Refutation
- P(d);
- Try
- Actual
- P(C);
- Vars
- R(b);CHECK,OGATEB::R(D),XR(b)
- R(b);N_SPINR(b),OGATE,XR(D)::QAR(I),XR(b)
- P(d);EP,OGATE,XP(C)::QAR(I)
- P(e);EP,N_SPINP(d),P_SPINP(c),XP(C)::R1(D),XR(b)
- B(f);N_GUARD::B(H),XP(d)
- B(g);N_GUARD::S(E)
- B(g);N_GUARD::S(E),XB(g)
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).