MESON Chess Problem Database
Problem Display
PID: 106924 (1K6/4N3/1Q1n4/3R1p2/p1k1bR2/brP1pn2/Bp2P3/1N6 w - - 0 1)
Kamstra, Hendrik Hermanus
De Schaakwereld, 1938
#2
9 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Bb4
- 2.Qxb4#
- 1...Bc5
- 2.Rxc5#
- 1...Se1
- 2.Rd4#
- 1...Sg1
- 2.Rd4#
- 1...Sd2
- 2.Rd4#
- 1...Sh2
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Sh4
- 2.Rd4#
- 1...Se5
- 2.Rd4#
- 1...Sg5
- 2.Rd4#
- 1...Sb5
- 2.Qxb5#
- 1...Sb7
- 2.Qb5#
- 2.Qa6#
- 1...Sf7
- 2.Qb5#
- 1...Sc8
- 2.Qb5#
- 1...Se8
- 2.Qb5#
- 1...Bb4
- Tries
- 1.Ka7?
- 1...Sb5+
- 2.Qxb5#
- 1...Bb4
- 2.Qxb4#
- 1...Bc5
- 2.Rxc5#
- 2.Qxc5#
- 1...Se1
- 2.Rd4#
- 2.Qd4#
- 1...Sg1
- 2.Rd4#
- 2.Qd4#
- 1...Sd2
- 2.Rd4#
- 2.Qd4#
- 1...Sh2
- 2.Rd4#
- 2.Qd4#
- 1...Sd4
- 2.Rxd4#
- 2.Qxd4#
- 1...Sh4
- 2.Rd4#
- 2.Qd4#
- 1...Se5
- 2.Rd4#
- 2.Qd4#
- 1...Sg5
- 2.Rd4#
- 2.Qd4#
- 1...Sb7
- 2.Qb5#
- 2.Qa6#
- 1...Sf7
- 2.Qb5#
- 2.Qa6#
- 1...Se8
- 2.Qb5#
- 2.Qa6#
- 1...Sc8+!
- 1...Sb5+
- 1.Kc7?
- 1...Sb5+
- 2.Qxb5#
- 1...Bb4
- 2.Qxb4#
- 1...Bc5
- 2.Rxc5#
- 2.Qxc5#
- 1...Se1
- 2.Rd4#
- 2.Qd4#
- 1...Sg1
- 2.Rd4#
- 2.Qd4#
- 1...Sd2
- 2.Rd4#
- 2.Qd4#
- 1...Sh2
- 2.Rd4#
- 2.Qd4#
- 1...Sd4
- 2.Rxd4#
- 2.Qxd4#
- 1...Sh4
- 2.Rd4#
- 2.Qd4#
- 1...Se5
- 2.Rd4#
- 2.Qd4#
- 1...Sg5
- 2.Rd4#
- 2.Qd4#
- 1...Sb7
- 2.Qb5#
- 2.Qa6#
- 1...Sf7
- 2.Qb5#
- 2.Qa6#
- 1...Sc8
- 2.Qb5#
- 2.Qa6#
- 1...Se8+!
- 1...Sb5+
- 1.Sxf5?
- threat
- 2.Sxe3#
- 1...Sxf5
- 2.Qb5#
- 1...Bc5
- 2.Rxc5#
- 1...Kxd5!
- threat
- 1.Rxe4+?
- 1...Sd4
- 2.Rexd4#
- 2.Rdxd4#
- 1...Sxe4
- 2.Qb5#
- 1...fxe4!
- 1...Sd4
- 1.Rh4?
- 1...Sxh4
- 2.Rd4#
- 1...Bb4
- 2.Qxb4#
- 1...Bc5
- 2.Rxc5#
- 1...Se1
- 2.Rd4#
- 1...Sg1
- 2.Rd4#
- 1...Sd2
- 2.Rd4#
- 1...Sh2
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Se5
- 2.Rd4#
- 1...Sg5
- 2.Rd4#
- 1...Sb5
- 2.Qxb5#
- 1...Sb7
- 2.Qb5#
- 2.Qa6#
- 1...Sf7
- 2.Qb5#
- 1...Sc8
- 2.Qb5#
- 1...Se8
- 2.Qb5#
- 1...f4!
- 1...Sxh4
- 1.exf3?
- threat
- 2.Rd4#
- 1...Sb5
- 2.Qxb5#
- 1...Bc5!
- threat
- 1.Ka7?
- Keys
- 1.Ka8!
- 1...Bb4
- 2.Qxb4#
- 1...Bc5
- 2.Qxc5#
- 1...Se1
- 2.Qd4#
- 1...Sg1
- 2.Qd4#
- 1...Sd2
- 2.Qd4#
- 1...Sh2
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sh4
- 2.Qd4#
- 1...Se5
- 2.Qd4#
- 1...Sg5
- 2.Qd4#
- 1...Sb5
- 2.Qxb5#
- 1...Sb7
- 2.Qb5#
- 2.Qa6#
- 1...Sf7
- 2.Qb5#
- 2.Qa6#
- 1...Sc8
- 2.Qb5#
- 2.Qa6#
- 1...Se8
- 2.Qb5#
- 2.Qa6#
- 1...Bb4
- 1.Ka8!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 9
- ADDED MATES = 0
- REMOVED MATES = 3
- Sets
- B(b);N_GUARD,N_PINQ(G)::QAR1(G),XB(b)
- B(b);N_GUARD::R1(F),XB(b)
- S(e);N_GUARD::R1(F)
- S(e);N_GUARD,N_SPINB(h)::R1(F),XS(e)
- S(j);N_GUARD,N_PINQ(G)::QAB1(G),XS(j)
- S(j);N_GUARD::QAB1(G)
- Tries
- Try
- K(I);N_SPINQ(G),S_FLIGHT
- Vars
- S(j);CHECK,N_GUARD::QAB1(G),XS(j)
- B(b);N_GUARD::QAR1(G),XB(b)
- Refutation
- S(j);CHECK
- Try
- K(I);N_SPINQ(G),S_FLIGHT
- Vars
- S(j);CHECK,N_GUARD::QAB1(G),XS(j)
- B(b);N_GUARD::QAR1(G),XB(b)
- Refutation
- S(j);CHECK
- Try
- S(H);XP(i)
- Threat
- S(H),XP(d)
- Vars
- S(j);N_GUARD,XS(H)::QAB1(G)
- B(b);N_GUARD::R1(F),XB(b)
- Refutation
- K(g);N_SPINB(h),S_FLIGHT,XR(F)
- Try
- R(E);CHECK,XB(h)
- Vars
- S(j);XR(E)::QAB1(G)
- Refutation
- P(i);XR(E)
- Try
- R(E);
- Vars
- S(e);N_GUARD,N_SPINB(h),XR(E)::R1(F)
- B(b);N_GUARD,N_PINQ(G)::QAR1(G),XB(b)
- B(b);N_GUARD::R1(F),XB(b)
- S(e);N_GUARD::R1(F)
- S(e);N_GUARD,N_SPINB(h)::R1(F),XS(e)
- S(j);N_GUARD,N_PINQ(G)::QAB1(G),XS(j)
- S(j);N_GUARD::QAB1(G)
- Refutation
- P(i);N_SPINB(h)
- Try
- P(C);XS(e)
- Threat
- R1(F)
- Vars
- S(j);N_GUARD,N_PINQ(G)::QAB1(G),XS(j)
- Refutation
- B(b);
- Try
- Actual
- K(I);N_SPINQ(G),P-FLIGHT,P_SPINR(F)
- Vars
- B(b);N_GUARD::QAR1(G),XB(b)
- S(e);N_GUARD::QAR1(G)
- S(e);N_GUARD,N_SPINB(h)::QAR1(G),XS(e)
- S(j);N_GUARD::QAB1(G),XS(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).