MESON Chess Problem Database
Problem Display
PID: 106900 (8/1N1R2p1/p5K1/pb1P1Pn1/Rbpk1B2/8/B1QP4/4N3 w - - 0 1)
Kamstra, Hendrik Hermanus
Match: France - The Netherlands, 1937-1938
#2
11 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Bxd2
- 2.Qd3#
- 1...Ba3
- 2.Qd3#
- 1...Bc3
- 2.Qd3#
- 2.dxc3#
- 1...Bc5
- 2.Qd3#
- 1...Bd6
- 2.Qd3#
- 1...Be7
- 2.Qd3#
- 1...Bf8
- 2.Qd3#
- 1...Bxa4
- 2.Qxc4#
- 1...Bc6
- 2.Qxc4#
- 1...Bxd7
- 2.Qxc4#
- 1...Sf3
- 2.Sxf3#
- 1...Sh3
- 2.Sf3#
- 1...Se4
- 2.Sf3#
- 1...Se6
- 2.Sf3#
- 1...Sf7
- 2.Sf3#
- 1...Sh7
- 2.Sf3#
- 1...c3
- 2.dxc3#
- 1...Bxd2
- Tries
- 1.Kxg5?
- threat
- 2.Sf3#
- 1...Bxd7
- 2.Qxc4#
- 1...Bd6
- 2.Qd3#
- 1...Be7+!
- threat
- 1.Kh5?
- 1...Bxd2
- 2.Qd3#
- 1...Bxa4
- 2.Qxc4#
- 1...Bxd7
- 2.Qxc4#
- 1...Bd6
- 2.Qd3#
- 1...Ba3
- 2.Qd3#
- 1...Bc3
- 2.Qd3#
- 2.dxc3#
- 1...Bc5
- 2.Qd3#
- 1...Be7
- 2.Qd3#
- 1...Bf8
- 2.Qd3#
- 1...Bc6
- 2.Qxc4#
- 1...Sf3
- 2.Sxf3#
- 1...Sh3
- 2.Sf3#
- 1...Se4
- 2.Sf3#
- 1...Se6
- 2.Sf3#
- 1...Sf7
- 2.Sf3#
- 1...Sh7
- 2.Sf3#
- 1...c3
- 2.dxc3#
- 1...g6+!
- 1...Bxd2
- 1.Bb3?
- 1...Bxd2
- 2.Qd3#
- 1...Bxa4
- 2.Qxc4#
- 1...Bxd7
- 2.Qxc4#
- 1...Bd6
- 2.Qd3#
- 1...Ba3
- 2.Qd3#
- 1...Bc3
- 2.Qd3#
- 2.dxc3#
- 1...Bc5
- 2.Qd3#
- 1...Be7
- 2.Qd3#
- 1...Bf8
- 2.Qd3#
- 1...Bc6
- 2.Qxc4#
- 1...Sf3
- 2.Sxf3#
- 1...Sh3
- 2.Sf3#
- 1...Se4
- 2.Sf3#
- 1...Se6
- 2.Sf3#
- 1...Sf7
- 2.Sf3#
- 1...Sh7
- 2.Sf3#
- 1...c3
- 2.dxc3#
- 1...cxb3!
- 1...Bxd2
- 1.Bh2?
- 1...Bxd2
- 2.Qd3#
- 1...Bxa4
- 2.Qxc4#
- 1...Bxd7
- 2.Qxc4#
- 1...Bd6
- 2.Qd3#
- 1...Ba3
- 2.Qd3#
- 1...Bc3
- 2.Qd3#
- 1...Bc5
- 2.Qd3#
- 1...Be7
- 2.Qd3#
- 1...Bf8
- 2.Qd3#
- 1...Bc6
- 2.Qxc4#
- 1...Sf3
- 2.Sxf3#
- 1...Sh3
- 2.Sf3#
- 1...Se4
- 2.Sf3#
- 1...Se6
- 2.Sf3#
- 1...Sf7
- 2.Sf3#
- 1...Sh7
- 2.Sf3#
- 1...c3!
- 1...Bxd2
- 1.Bg3?
- 1...Bxd2
- 2.Qd3#
- 1...Bxa4
- 2.Qxc4#
- 1...Bxd7
- 2.Qxc4#
- 1...Bd6
- 2.Qd3#
- 1...Ba3
- 2.Qd3#
- 1...Bc3
- 2.Qd3#
- 1...Bc5
- 2.Qd3#
- 1...Be7
- 2.Qd3#
- 1...Bf8
- 2.Qd3#
- 1...Bc6
- 2.Qxc4#
- 1...Sf3
- 2.Sxf3#
- 1...Sh3
- 2.Sf3#
- 1...Se4
- 2.Sf3#
- 1...Se6
- 2.Sf3#
- 1...Sf7
- 2.Sf3#
- 1...Sh7
- 2.Sf3#
- 1...c3!
- 1...Bxd2
- 1.Rd6?
- 1...Bxd2
- 2.Qd3#
- 1...Bxd6
- 2.Qd3#
- 1...Bxa4
- 2.Qxc4#
- 1...c3
- 2.dxc3#
- 1...Ba3
- 2.Qd3#
- 1...Bc3
- 2.Qd3#
- 2.dxc3#
- 1...Bc5
- 2.Qd3#
- 1...Bc6
- 2.Qxc4#
- 1...Bd7
- 2.Qxc4#
- 1...Sf3
- 2.Sxf3#
- 1...Sh3
- 2.Sf3#
- 1...Se4
- 2.Sf3#
- 1...Se6
- 2.Sf3#
- 1...Sf7
- 2.Sf3#
- 1...Sh7
- 2.Sf3#
- 1...Be8+!
- 1...Bxd2
- 1.Rd8?
- 1...Bxd2
- 2.Qd3#
- 1...Bxa4
- 2.Qxc4#
- 1...Bd6
- 2.Qd3#
- 1...Bd7
- 2.Qxc4#
- 1...c3
- 2.dxc3#
- 1...Ba3
- 2.Qd3#
- 1...Bc3
- 2.Qd3#
- 2.dxc3#
- 1...Bc5
- 2.Qd3#
- 1...Be7
- 2.Qd3#
- 1...Bf8
- 2.Qd3#
- 1...Bc6
- 2.Qxc4#
- 1...Sf3
- 2.Sxf3#
- 1...Sh3
- 2.Sf3#
- 1...Se4
- 2.Sf3#
- 1...Se6
- 2.Sf3#
- 1...Sf7
- 2.Sf3#
- 1...Sh7
- 2.Sf3#
- 1...Be8+!
- 1...Bxd2
- 1.Qc3+?
- 1...Ke4
- 2.Qe5#
- 2.Qe3#
- 1...Bxc3!
- 1...Ke4
- 1.f6?
- 1...Bxd2
- 2.Qd3#
- 1...Bxa4
- 2.Qxc4#
- 1...Bxd7
- 2.Qxc4#
- 1...Bd6
- 2.Qd3#
- 1...c3
- 2.dxc3#
- 1...Ba3
- 2.Qd3#
- 1...Bc3
- 2.Qd3#
- 2.dxc3#
- 1...Bc5
- 2.Qd3#
- 1...Be7
- 2.Qd3#
- 1...Bf8
- 2.Qd3#
- 1...Bc6
- 2.Qxc4#
- 1...Sf3
- 2.Sxf3#
- 1...Sh3
- 2.Sf3#
- 1...Se4
- 2.Sf3#
- 1...Se6
- 2.Sf3#
- 1...Sf7
- 2.Sf3#
- 1...Sh7
- 2.Sf3#
- 1...gxf6!
- 1...Bxd2
- 1.Kxg5?
- Keys
- 1.Sc5!
- 1...Kxc5
- 2.Be3#
- 1...Bxd2
- 2.Sb3#
- 1...Bxc5
- 2.Qd3#
- 1...Bxa4
- 2.Qxc4#
- 1...Bxd7
- 2.Qxc4#
- 1...Ba3
- 2.Sb3#
- 1...Bc3
- 2.Sb3#
- 1...Bc6
- 2.Qxc4#
- 1...Sf3
- 2.Se6#
- 1...Sh3
- 2.Se6#
- 1...Se4
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Sf7
- 2.Se6#
- 1...Sh7
- 2.Se6#
- 1...c3
- 2.Qxc3#
- 1...Kxc5
- 1.Sc5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 9
- ADDED MATES = 2
- REMOVED MATES = 3
- Sets
- B(a);P_SPINP(b),XP(D)::QAR1(C)
- B(a);P_SPINP(b)::QAR1(C)
- B(e);N_GUARD,XR(E)::QAR1(C),XP(b)
- B(e);N_GUARD::QAR1(C),XP(b)
- B(e);N_GUARD,XR(K)::QAR1(C),XP(b)
- S(f);N_GUARD::S(A),XS(f)
- S(f);N_GUARD::S(A)
- P(b);OGATE,P_SPINB(a)::P(D),XP(b)
- Tries
- Try
- K(I);P-FLIGHT,XS(f)
- Threat
- S(A)
- Vars
- B(e);N_GUARD,XR(K)::QAR1(C),XP(b)
- B(a);P_SPINP(b)::QAR1(C)
- Refutation
- B(a);CHECK,P_SPINP(b)
- Try
- K(I);S_FLIGHT
- Vars
- B(a);P_SPINP(b),XP(D)::QAR1(C)
- B(e);N_GUARD,XR(E)::QAR1(C),XP(b)
- B(e);N_GUARD,XR(K)::QAR1(C),XP(b)
- B(a);P_SPINP(b)::QAR1(C)
- B(e);N_GUARD::QAR1(C),XP(b)
- S(f);N_GUARD::S(A),XS(f)
- S(f);N_GUARD::S(A)
- P(b);OGATE,P_SPINB(a)::P(D),XP(b)
- Refutation
- P(h);CHECK
- Try
- B(B);
- Vars
- B(a);P_SPINP(b),XP(D)::QAR1(C)
- B(e);N_GUARD,XR(E)::QAR1(C),XP(b)
- B(e);N_GUARD,XR(K)::QAR1(C),XP(b)
- B(a);P_SPINP(b)::QAR1(C)
- B(e);N_GUARD::QAR1(C),XP(b)
- S(f);N_GUARD::S(A),XS(f)
- S(f);N_GUARD::S(A)
- P(b);OGATE,P_SPINB(a)::P(D),XP(b)
- Refutation
- P(b);P_SPINB(a),XB(B)
- Try
- B(F);
- Vars
- B(a);P_SPINP(b),XP(D)::QAR1(C)
- B(e);N_GUARD,XR(E)::QAR1(C),XP(b)
- B(e);N_GUARD,XR(K)::QAR1(C),XP(b)
- B(a);P_SPINP(b)::QAR1(C)
- B(e);N_GUARD::QAR1(C),XP(b)
- S(f);N_GUARD::S(A),XS(f)
- S(f);N_GUARD::S(A)
- Refutation
- P(b);P_SPINB(a)
- Try
- B(F);
- Vars
- B(a);P_SPINP(b),XP(D)::QAR1(C)
- B(e);N_GUARD,XR(E)::QAR1(C),XP(b)
- B(e);N_GUARD,XR(K)::QAR1(C),XP(b)
- B(a);P_SPINP(b)::QAR1(C)
- B(e);N_GUARD::QAR1(C),XP(b)
- S(f);N_GUARD::S(A),XS(f)
- S(f);N_GUARD::S(A)
- Refutation
- P(b);P_SPINB(a)
- Try
- R(K);
- Vars
- B(a);P_SPINP(b),XP(D)::QAR1(C)
- B(a);P_SPINP(b),XR(K)::QAR1(C)
- B(e);N_GUARD,XR(E)::QAR1(C),XP(b)
- P(b);OGATE,P_SPINB(a)::P(D),XP(b)
- B(a);P_SPINP(b)::QAR1(C)
- B(e);N_GUARD::QAR1(C),XP(b)
- S(f);N_GUARD::S(A),XS(f)
- S(f);N_GUARD::S(A)
- Refutation
- B(e);CHECK
- Try
- R(K);
- Vars
- B(a);P_SPINP(b),XP(D)::QAR1(C)
- B(e);N_GUARD,XR(E)::QAR1(C),XP(b)
- B(a);P_SPINP(b)::QAR1(C)
- B(e);N_GUARD::QAR1(C),XP(b)
- P(b);OGATE,P_SPINB(a)::P(D),XP(b)
- S(f);N_GUARD::S(A),XS(f)
- S(f);N_GUARD::S(A)
- Refutation
- B(e);CHECK
- Try
- Q(C);CHECK
- Refutation
- B(a);P_SPINP(b),XQ(C)
- Try
- P(H);
- Vars
- B(a);P_SPINP(b),XP(D)::QAR1(C)
- B(e);N_GUARD,XR(E)::QAR1(C),XP(b)
- B(e);N_GUARD,XR(K)::QAR1(C),XP(b)
- B(a);P_SPINP(b)::QAR1(C)
- P(b);OGATE,P_SPINB(a)::P(D),XP(b)
- B(e);N_GUARD::QAR1(C),XP(b)
- S(f);N_GUARD::S(A),XS(f)
- S(f);N_GUARD::S(A)
- Refutation
- P(h);XP(H)
- Try
- Actual
- S(J);
- Vars
- K(c);P_SPINP(b),S_FLIGHT,XS(J)::B(F)
- B(a);P_SPINP(b),XP(D)::S(J)
- B(a);P_SPINP(b),SBLOCK,XS(J)::QAR1(C)
- B(e);N_GUARD,XR(E)::QAR1(C),XP(b)
- B(e);N_GUARD,XR(K)::QAR1(C),XP(b)
- B(a);P_SPINP(b)::S(J)
- B(e);N_GUARD::QAR1(C),XP(b)
- S(f);N_GUARD::S(J)
- S(f);N_GUARD::S(J),XS(f)
- P(b);P_SPINB(a)::QAB1(C),XP(b)
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).