MESON Chess Problem Database
Problem Display
PID: 248093 (7B/P4NrB/Kp4Pb/3p4/2p1k3/nNPp1R1p/3PP1q1/5R1Q w - - 0 1)
Blikeng, Bjarne
3rd Prize, Szachy, 1948
#2
13 + 10
| 15601 | Albrecht-Leiss-Degener Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qxf1
- 2.Rxf1#
- 1...Qxf3
- 2.Qxf3#
- 1...Qg1
- 2.Re3#
- 2.Rf4#
- 1...Qxe2
- 2.Re3#
- 2.Rf4#
- 1...Qf2
- 2.R3xf2#
- 1...Qh2
- 2.Re3#
- 2.Rf4#
- 1...Qg3
- 2.Re3#
- 2.Rxg3#
- 2.Rf4#
- 1...Qg4
- 2.Re3#
- 2.Rf4#
- 1...Qg5
- 2.Re3#
- 2.Rg3#
- 2.Rf4#
- 1...Qxg6
- 2.R3f2#
- 2.Rxd3#
- 2.Re3#
- 2.Rg3#
- 2.Rxh3#
- 2.Rf4#
- 2.Rf6#
- 1...Rxg6
- 2.Sd6#
- 1...Rxh7
- 2.Sd6#
- 1...Rg8
- 2.Sd6#
- 1...Bxd2
- 2.Sxd2#
- 1...Be3
- 2.Rxe3#
- 1...Bf4
- 2.Rxf4#
- 1...cxb3
- 2.exd3#
- 1...d4
- 2.a8Q#
- 2.a8B#
- 1...b5
- 2.Sc5#
- 1...Qxf1
- Tries
- 1.Bxg7?
- threat
- 2.Sd6#
- 1...Qxf3
- 2.Qxf3#
- 1...Bxg7
- 2.Re3#
- 2.Rf4#
- 1...Bf4
- 2.Rxf4#
- 1...d4
- 2.a8Q#
- 2.a8B#
- 1...Qh2
- 2.Re3#
- 2.Rf4#
- 1...Qg3
- 2.Re3#
- 2.Rxg3#
- 2.Rf4#
- 1...Sb5!
- threat
- 1.Rf5?
- threat
- 2.Sd6#
- 2.Re5#
- 1...Rxg6
- 2.Re5#
- 1...Rxf7
- 2.Re5#
- 1...Bxd2
- 2.Re5#
- 1...Qf3
- 2.Sd6#
- 2.Qxf3#
- 1...Bf4
- 2.R1xf4#
- 2.R5xf4#
- 1...Sb5
- 2.Re5#
- 1...dxe2!
- threat
- 1.Rf6?
- threat
- 2.Re6#
- 1...d4
- 2.a8Q#
- 2.a8B#
- 1...Qf3
- 2.Qxf3#
- 2.exf3#
- 1...Bf4
- 2.R1xf4#
- 2.R6xf4#
- 1...dxe2!
- threat
- 1.Qxg2?
- threat
- 2.Re3#
- 2.Rxh3#
- 2.Rf4#
- 1...Rxf7
- 2.Re3#
- 2.Rf4#
- 2.gxf7#
- 1...Bxd2
- 2.Sxd2#
- 2.Rxh3#
- 1...dxe2
- 2.Re3#
- 2.Rxh3#
- 1...Bf4
- 2.Rxf4#
- 1...Be3
- 2.Rxe3#
- 2.Rxh3#
- 2.Rf4#
- 1...h2
- 2.R3f2#
- 2.Rxd3#
- 2.Re3#
- 2.Rg3#
- 2.Rh3#
- 2.Rf4#
- 2.Rf5#
- 2.Rf6#
- 1...hxg2!
- threat
- 1.Bxg7?
- Keys
- 1.Kxb6!
- threat
- 2.Sc5#
- 1...Qg1+
- 2.Re3#
- 1...Qf2+
- 2.R3xf2#
- 1...Qxg6+
- 2.Rf6#
- 1...Rxg6+
- 2.Sd6#
- 1...Be3+
- 2.Rxe3#
- 1...Qxf3
- 2.Qxf3#
- 1...cxb3
- 2.exd3#
- 1...Bf4
- 2.Rxf4#
- 1...d4
- 2.a8Q#
- 2.a8B#
- threat
- 1.Kxb6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 5
- Sets
- Q(a);OGATE,XR(A)::QAB(B)+R(G),XQ(a)
- Q(a);OGATE,P_SPINQ(a),XR(G)::QAB1(B),XQ(a)
- Q(a);OGATEB::QAB(B)+R(G),XQ(a)
- R(j);P_SPINR(j),XP(I)::S(K)
- R(j);XB(L)::S(K)
- R(j);::S(K)
- B(i);XP(C)::S(E),XB(i)
- B(i);N_GUARD::R1(G),XB(i)
- P(e);N_GUARD,XS(E)::P(D),XP(c)
- P(g);::P=Q
- P(h);N_GUARD::S(E)
- Tries
- Try
- B(M);XR(j)
- Threat
- S(K)
- Vars
- Q(a);OGATE,P_SPINQ(a),XR(G)::QAB1(B),XQ(a)
- B(i);N_GUARD::R1(G),XB(i)
- P(g);::P=Q
- Refutation
- S(b);
- Try
- R(G);P_PINQ(a)
- Threat
- DUALS(2)
- Vars
- R(j);XP(I)::R1(G)
- R(j);XS(K)::R1(G)
- B(i);XP(C)::R1(G)
- S(b);::R1(G)
- Refutation
- P(c);XP(D)
- Try
- R(G);P_PINQ(a)
- Threat
- R(G)
- Vars
- P(g);::P=Q
- Refutation
- P(c);XP(D)
- Try
- Q(B);XQ(a)
- Threat
- DUALS(3)
- Vars
- B(i);::QAB(B)+R(G),DCHECK,XB(i)
- Refutation
- P(d);XQ(B)
- Try
- Actual
- K(H);P-FLIGHT,XP(h)
- Threat
- S(E)
- Vars
- Q(a);CHECK::QAB(B)+R(G),DCHECK
- Q(a);CHECK,OGATEB::QAB(B)+R(G),XQ(a)
- Q(a);CHECK,OGATEB,P_SPINQ(a),XP(I)::QAB(B)+R(G)
- R(j);CHECK,P_SPINR(j),XP(I)::S(K)
- B(i);CHECK,N_GUARD::R1(G),XB(i)
- Q(a);OGATE,P_SPINQ(a),XR(G)::QAB1(B),XQ(a)
- P(e);N_GUARD,XS(E)::P(D),XP(c)
- B(i);N_GUARD::R1(G),XB(i)
- P(g);::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).