MESON Chess Problem Database
Problem Display
PID: 53241 (8/4p3/1R2N3/b4p2/2pB3K/Q1pn1k2/8/1N3B2 w - - 0 1)
de Jong, Leonard Nicholaas
Tijdschrift vd NSB, 1893
#2
7 + 7
| 3530 | Het Half Pin Thema (II) | 1947 |
SOLUTION
- SOUND
- Sets
- 1...Ke4
- 2.Bg2#
- 1...Bb4
- 2.Qa8#
- 1...Bxb6
- 2.Qa8#
- 1...Sc1
- 2.Sd2#
- 1...Se1
- 2.Sd2#
- 1...Sb2
- 2.Sd2#
- 1...Sf2
- 2.Sd2#
- 1...Sb4
- 2.Sd2#
- 1...Sf4
- 2.Sd2#
- 2.Sg5#
- 1...Sc5
- 2.Sd2#
- 1...Se5
- 2.Sd2#
- 1...f4
- 2.Sg5#
- 1...Ke4
- Tries
- 1.Rb5?
- 1...Ke4
- 2.Bg2#
- 1...Bb4
- 2.Qa8#
- 1...Bb6
- 2.Qa8#
- 1...Bc7
- 2.Qa8#
- 1...Bd8
- 2.Qa8#
- 1...Sc1
- 2.Sd2#
- 1...Se1
- 2.Sd2#
- 1...Sb2
- 2.Sd2#
- 1...Sf2
- 2.Sd2#
- 1...Sb4
- 2.Sd2#
- 1...Sf4
- 2.Sd2#
- 2.Sg5#
- 1...Sc5
- 2.Sd2#
- 1...Se5
- 2.Sd2#
- 1...f4
- 2.Sg5#
- 1...c2!
- 1...Ke4
- 1.Rb8?
- 1...Ke4
- 2.Bg2#
- 1...Bb4
- 2.Qa8#
- 1...Bb6
- 2.Qa8#
- 1...Bc7
- 2.Qa8#
- 1...Bd8
- 2.Qa8#
- 1...Sc1
- 2.Sd2#
- 1...Se1
- 2.Sd2#
- 1...Sb2
- 2.Sd2#
- 1...Sf2
- 2.Sd2#
- 1...Sb4
- 2.Sd2#
- 1...Sf4
- 2.Sd2#
- 2.Sg5#
- 1...Sc5
- 2.Sd2#
- 1...Se5
- 2.Sd2#
- 1...f4
- 2.Sg5#
- 1...c2!
- 1...Ke4
- 1.Qc1?
- threat
- 2.Sg5#
- 2.Qe3#
- 1...Ke4
- 2.Bg2#
- 1...f4
- 2.Sg5#
- 1...Sxc1!
- threat
- 1.Qc5?
- threat
- 2.Qd5#
- 2.Qc6#
- 1...Ke4
- 2.Bg2#
- 2.Qc6#
- 1...Sf2
- 2.Qxf5#
- 1...Sb4
- 2.Qxf5#
- 1...Sf4
- 2.Sg5#
- 1...Se5
- 2.Qd5#
- 1...Sxc5!
- threat
- 1.Qd6?
- threat
- 2.Sg5#
- 2.Qd5#
- 2.Qc6#
- 1...Ke4
- 2.Sg5#
- 2.Bg2#
- 2.Qc6#
- 1...Sf2
- 2.Sg5#
- 2.Qf4#
- 1...Sb4
- 2.Sg5#
- 2.Qf4#
- 1...Sf4
- 2.Sg5#
- 2.Qxf4#
- 1...Sc5
- 2.Sg5#
- 2.Qf4#
- 1...Se5
- 2.Qd5#
- 1...exd6!
- threat
- 1.Qxc3?
- threat
- 2.Sd2#
- 1...Ke4
- 2.Bg2#
- 1...Bxc3!
- threat
- 1.Qxa5?
- threat
- 2.Qd5#
- 2.Qa8#
- 1...Ke4
- 2.Bg2#
- 2.Qa8#
- 1...Sf2
- 2.Qxf5#
- 1...Sb4
- 2.Qxf5#
- 1...Sf4
- 2.Sg5#
- 1...Se5
- 2.Qd5#
- 1...Sc5!
- threat
- 1.Rb5?
- Keys
- 1.Rb4!
- 1...Ke4
- 2.Bg2#
- 1...Bxb4
- 2.Qa8#
- 1...Sxb4
- 2.Sd2#
- 1...c2
- 2.Sd2#
- 1...Bb6
- 2.Qa8#
- 1...Bc7
- 2.Qa8#
- 1...Bd8
- 2.Qa8#
- 1...Sc1
- 2.Sd2#
- 1...Se1
- 2.Sd2#
- 1...Sb2
- 2.Sd2#
- 1...Sf2
- 2.Sd2#
- 1...Sf4
- 2.Sd2#
- 2.Sg5#
- 1...Sc5
- 2.Sd2#
- 1...Se5
- 2.Sd2#
- 1...f4
- 2.Sg5#
- 1...Ke4
- 1.Rb4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- K(c);S_FLIGHT::B(B)
- B(e);OGATE::QAB(C)
- B(e);OGATE,XR(F)::QAB(C)
- S(b);P_SPINP(a)::S(A)
- P(f);SBLOCK::S(G)
- Tries
- Try
- R(F);
- Vars
- K(c);S_FLIGHT::B(B)
- B(e);OGATE::QAB(C)
- S(b);P_SPINP(a)::S(A)
- P(f);SBLOCK::S(G)
- Refutation
- P(a);P_SPINS(b)
- Try
- R(F);
- Vars
- K(c);S_FLIGHT::B(B)
- B(e);OGATE::QAB(C)
- S(b);P_SPINP(a)::S(A)
- P(f);SBLOCK::S(G)
- Refutation
- P(a);P_SPINS(b)
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- K(c);S_FLIGHT::B(B)
- P(f);::S(G)
- Refutation
- S(b);XQ(C)
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- S(b);N_GUARD::QAR2(C),XP(f)
- S(b);SBLOCK::S(G)
- S(b);::QAB(C)
- Refutation
- S(b);XQ(C)
- Try
- Q(C);
- Threat
- DUALS(3)
- Vars
- S(b);::QAB(C)
- Refutation
- P(g);XQ(C)
- Try
- Q(C);P_PINS(b),XP(a)
- Threat
- S(A)
- Vars
- K(c);N_SPINS(b),S_FLIGHT::B(B)
- Refutation
- B(e);N_SPINS(b),XQ(C)
- Try
- Q(C);XB(e)
- Threat
- DUALS(2)
- Vars
- S(b);N_GUARD::QAR2(C),XP(f)
- S(b);SBLOCK::S(G)
- S(b);::QAB(C)
- Refutation
- S(b);
- Try
- Actual
- R(F);
- Vars
- K(c);S_FLIGHT::B(B)
- B(e);OGATE,XR(F)::QAB(C)
- S(b);P_SPINP(a),XR(F)::S(A)
- P(a);N_GUARD,P_SPINS(b)::S(A)
- B(e);OGATE::QAB(C)
- S(b);P_SPINP(a)::S(A)
- P(f);SBLOCK::S(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).