MESON Chess Problem Database
Problem Display
PID: 35803 (8/B1p1p3/2pbp1Q1/2r1p3/p1P2P2/R3pk1N/7P/5K1b w - - 0 1)
Knoppel, Jan Heribert
Eskilstuna Kuriren, 1950
#2
8 + 11
| 3680 | Jan Knoppel Udvalgte Skakproblemer | 1955 |
SOLUTION
- SOUND
- Sets
- 1...Rxc4
- 2.Rxe3#
- 1...Ra5
- 2.Rxe3#
- 1...Rb5
- 2.Rxe3#
- 1...Rd5
- 2.Rxe3#
- 1...Bg2+
- 2.Qxg2#
- 1...exf4
- 2.Sg1#
- 1...e4
- 2.Qg3#
- 1...Rxc4
- Tries
- 1.Ke1?
- 1...Rxc4
- 2.Rxe3#
- 1...exf4
- 2.Sg1#
- 1...Ra5
- 2.Rxe3#
- 1...Rb5
- 2.Rxe3#
- 1...Rd5
- 2.Rxe3#
- 1...e4
- 2.Qg3#
- 1...Bg2!
- 1...Rxc4
- 1.Sf2?
- threat
- 2.Qe4#
- 2.Qg3#
- 2.Qg4#
- 1...Kxf4
- 2.Qg4#
- 1...Rxc4
- 2.Qg3#
- 2.Qg4#
- 1...exf4
- 2.Qe4#
- 2.Qg4#
- 1...e4
- 2.Qxe4#
- 2.Qg3#
- 2.Qg4#
- 1...Bg2+!
- threat
- 1.Bxc5?
- threat
- 2.Rxe3#
- 1...Bg2+
- 2.Qxg2#
- 1...exf4
- 2.Sg1#
- 1...Bxc5!
- threat
- 1.Bb6?
- 1...Bg2+
- 2.Qxg2#
- 1...Rxc4
- 2.Rxe3#
- 1...exf4
- 2.Sg1#
- 1...Ra5
- 2.Rxe3#
- 1...Rb5
- 2.Rxe3#
- 1...Rd5
- 2.Rxe3#
- 1...e4
- 2.Qg3#
- 1...cxb6!
- 1...Bg2+
- 1.Rc3?
- 1...Bg2+
- 2.Qxg2#
- 1...Rxc4
- 2.Rxe3#
- 1...exf4
- 2.Sg1#
- 1...Ra5
- 2.Rxe3#
- 1...Rb5
- 2.Rxe3#
- 1...Rd5
- 2.Rxe3#
- 1...e4
- 2.Qg3#
- 1...a3!
- 1...Bg2+
- 1.Rd3?
- 1...Bg2+
- 2.Qxg2#
- 1...Rxc4
- 2.Rxe3#
- 1...exf4
- 2.Sg1#
- 1...Ra5
- 2.Rxe3#
- 1...Rb5
- 2.Rxe3#
- 1...Rd5
- 2.Rxe3#
- 1...e4
- 2.Qg3#
- 1...a3!
- 1...Bg2+
- 1.Qg4+?
- 1...Ke4
- 2.f5#
- 1...Kxg4!
- 1...Ke4
- 1.Ke1?
- Keys
- 1.f5!
- 1...Bg2+
- 2.Qxg2#
- 1...Ke4
- 2.Qg4#
- 1...Rxc4
- 2.Rxe3#
- 1...exf5
- 2.Qxf5#
- 1...Ra5
- 2.Rxe3#
- 1...Rb5
- 2.Rxe3#
- 1...Rd5
- 2.Rxe3#
- 1...e4
- 2.Qh5#
- 1...Bg2+
- 1.f5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- R(e);XP(E)::R1(C),XP(b)
- R(e);::R1(C),XP(b)
- B(a);CHECK,N_GUARD::QAB1(G),XB(a)
- P(f);SBLOCK,XP(F)::S(D)
- P(f);SBLOCK::QAR1(G)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- R(e);XP(E)::R1(C),XP(b)
- P(f);SBLOCK,XP(F)::S(D)
- R(e);::R1(C),XP(b)
- P(f);SBLOCK::QAR1(G)
- Refutation
- B(a);
- Try
- S(D);
- Threat
- DUALS(3)
- Vars
- K(c);N_SPINP(b),P-FLIGHT,XP(F)::QAR1(G)
- Refutation
- B(a);CHECK
- Try
- B(H);XR(e)
- Threat
- R1(C),XP(b)
- Vars
- B(a);CHECK,N_GUARD::QAB1(G),XB(a)
- P(f);SBLOCK,XP(F)::S(D)
- Refutation
- B(h);XB(H)
- Try
- B(H);
- Vars
- B(a);CHECK,N_GUARD::QAB1(G),XB(a)
- R(e);XP(E)::R1(C),XP(b)
- P(f);SBLOCK,XP(F)::S(D)
- R(e);::R1(C),XP(b)
- P(f);SBLOCK::QAR1(G)
- Refutation
- P(j);XB(H)
- Try
- R(C);
- Vars
- B(a);CHECK,N_GUARD::QAB1(G),XB(a)
- R(e);XP(E)::R1(C),XP(b)
- P(f);SBLOCK,XP(F)::S(D)
- R(e);::R1(C),XP(b)
- P(f);SBLOCK::QAR1(G)
- Refutation
- P(d);
- Try
- R(C);
- Vars
- B(a);CHECK,N_GUARD::QAB1(G),XB(a)
- R(e);XP(E)::R1(C),XP(b)
- P(f);SBLOCK,XP(F)::S(D)
- R(e);::R1(C),XP(b)
- P(f);SBLOCK::QAR1(G)
- Refutation
- P(d);
- Try
- Q(G);CHECK
- Vars
- K(c);N_SPINP(b),S_FLIGHT::QAR(G)+P(F)
- Refutation
- K(c);N_SPINP(b),S_FLIGHT,XQ(G)
- Try
- Actual
- P(F);
- Vars
- B(a);CHECK,N_GUARD::QAB1(G),XB(a)
- K(c);N_SPINP(b),S_FLIGHT::QAR2(G)
- R(e);XP(E)::R1(C),XP(b)
- P(i);OGATE,XP(F)::QAR2(G),XP(i)
- R(e);::R1(C),XP(b)
- P(f);SBLOCK::QAB(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).