MESON Chess Problem Database
Problem Display
PID: 90137 (4K1B1/2p3bb/4n1pB/6RP/2pp2N1/1PPk1pN1/Q4P2/2R1n3 w - - 0 1)
Termaat, Nicolaas Ljsbrand Johanne
Die Schwalbe, 1949
#2
12 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Be5
- 2.Sxe5#
- 1...Bxh6
- 2.Se5#
- 1...Bf8
- 2.Se5#
- 1...Sc2
- 2.Qxc2#
- 1...Sg2
- 2.Qc2#
- 1...Sf4
- 2.Bxc4#
- 1...Sc5
- 2.Bxc4#
- 1...Sxg5
- 2.Bxc4#
- 1...Sd8
- 2.Bxc4#
- 1...Sf8
- 2.Bxc4#
- 1...dxc3
- 2.Rd1#
- 1...gxh5
- 2.Bxh7#
- 1...Be5
- Tries
- 1.Bxg7?
- threat
- 2.Se5#
- 1...dxc3
- 2.Rd1#
- 2.Rxc3#
- 1...Sc2
- 2.Qxc2#
- 1...Sxg7+!
- threat
- 1.Ra5?
- threat
- 2.Qd2#
- 1...Bxh6
- 2.Se5#
- 1...dxc3
- 2.Rd1#
- 1...Sc2
- 2.Qxc2#
- 1...Sf4
- 2.Bxc4#
- 1...Sg5
- 2.Bxc4#
- 1...g5
- 2.Bxh7#
- 1...cxb3!
- threat
- 1.Rb5?
- threat
- 2.Qd2#
- 1...Bxh6
- 2.Se5#
- 1...dxc3
- 2.Rd1#
- 1...Sc2
- 2.Qxc2#
- 1...Sf4
- 2.Bxc4#
- 1...Sg5
- 2.Bxc4#
- 1...g5
- 2.Bxh7#
- 1...cxb3!
- threat
- 1.Re5?
- threat
- 2.Qd2#
- 1...cxb3
- 2.Qa6#
- 1...dxc3
- 2.Rd1#
- 1...Sc2
- 2.Qxc2#
- 1...Sf4
- 2.Bxc4#
- 1...Sg5
- 2.Bxc4#
- 1...g5
- 2.Bxh7#
- 1...Bxh6!
- threat
- 1.Rf5?
- threat
- 2.Qd2#
- 1...Bxh6
- 2.Se5#
- 1...cxb3
- 2.Qa6#
- 1...dxc3
- 2.Rd1#
- 1...Sc2
- 2.Qxc2#
- 1...Sf4
- 2.Bxc4#
- 1...Sg5
- 2.Bxc4#
- 1...g5!
- threat
- 1.Rxg6?
- threat
- 2.Qd2#
- 1...Bxh6
- 2.Se5#
- 1...cxb3
- 2.Qa6#
- 1...dxc3
- 2.Rd1#
- 1...Sc2
- 2.Qxc2#
- 1...Sf4
- 2.Bxc4#
- 1...Sg5
- 2.Bxc4#
- 1...Bxg6+!
- threat
- 1.Qb1+?
- 1...Sc2
- 2.Qxc2#
- 1...Kd2!
- 1...Sc2
- 1.Bxg7?
- Keys
- 1.Rc5!
- threat
- 2.Qd2#
- 1...Bxh6
- 2.Se5#
- 1...dxc3
- 2.Rd1#
- 1...Sc2
- 2.Qxc2#
- 1...Sf4
- 2.Bxc4#
- 1...Sg5
- 2.Bxc4#
- 1...g5
- 2.Bxh7#
- threat
- 1.Rc5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 7
- Sets
- B(i);N_GUARD::S(G),XB(i)
- B(i);N_GUARD,XB(J)::S(G)
- B(i);N_GUARD::S(G)
- S(a);N_GUARD::QAB1(B),XS(a)
- S(a);N_GUARD::QAB1(B)
- S(f);OGATE::B(L),XP(d)
- S(f);OGATE,XR(H)::B(L),XP(d)
- P(e);SBLOCK,XP(E)::R(A)
- P(g);OGATEB,XP(I)::B(L),XB(j)
- Tries
- Try
- B(J);XB(i)
- Threat
- S(G)
- Vars
- S(a);N_GUARD::QAB1(B),XS(a)
- Refutation
- S(f);CHECK,XB(J)
- Try
- R(H);
- Threat
- QAR1(B)
- Vars
- B(i);N_GUARD,XB(J)::S(G)
- P(e);SBLOCK,XP(E)::R(A)
- S(a);N_GUARD::QAB1(B),XS(a)
- S(f);OGATE::B(L),XP(d)
- P(g);OGATEB::B(L),XB(j)
- Refutation
- P(d);XP(D)
- Try
- R(H);
- Threat
- QAR1(B)
- Vars
- B(i);N_GUARD,XB(J)::S(G)
- P(e);SBLOCK,XP(E)::R(A)
- S(a);N_GUARD::QAB1(B),XS(a)
- S(f);OGATE::B(L),XP(d)
- P(g);OGATEB::B(L),XB(j)
- Refutation
- P(d);XP(D)
- Try
- R(H);
- Threat
- QAR1(B)
- Vars
- P(d);OGATEB,XP(D)::QAB(B)
- P(e);SBLOCK,XP(E)::R(A)
- S(a);N_GUARD::QAB1(B),XS(a)
- S(f);OGATE::B(L),XP(d)
- P(g);OGATEB::B(L),XB(j)
- Refutation
- B(i);XB(J)
- Try
- R(H);
- Threat
- QAR1(B)
- Vars
- B(i);N_GUARD,XB(J)::S(G)
- P(d);OGATEB,XP(D)::QAB(B)
- P(e);SBLOCK,XP(E)::R(A)
- S(a);N_GUARD::QAB1(B),XS(a)
- S(f);OGATE::B(L),XP(d)
- Refutation
- P(g);
- Try
- R(H);XP(g)
- Threat
- QAR1(B)
- Vars
- B(i);N_GUARD,XB(J)::S(G)
- P(d);OGATEB,XP(D)::QAB(B)
- P(e);SBLOCK,XP(E)::R(A)
- S(a);N_GUARD::QAB1(B),XS(a)
- S(f);OGATE::B(L),XP(d)
- Refutation
- B(j);CHECK,XR(H)
- Try
- Q(B);CHECK
- Vars
- S(a);N_GUARD,P_SPINS(a)::QAB1(B),XS(a)
- Refutation
- K(b);P-FLIGHT
- Try
- Actual
- R(H);
- Threat
- QAR1(B)
- Vars
- B(i);N_GUARD,XB(J)::S(G)
- P(e);SBLOCK,XP(E)::R(A)
- S(a);N_GUARD::QAB1(B),XS(a)
- S(f);OGATE::B(L),XP(d)
- P(g);OGATEB::B(L),XB(j)
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).