MESON Chess Problem Database
Problem Display
PID: 251282 (R3K2k/4R2p/4b2P/3pr3/3B4/3r4/8/1Q6 w - - 0 1)
Kamstra, Hendrik Hermanus
Schakend Nederland, 1964
#2
6 + 6
| 15601 | Albrecht-Leiss-Degener Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rd1
- 2.Qxh7#
- 1...Rd2
- 2.Qxh7#
- 1...Ra3
- 2.Qxh7#
- 1...Rb3
- 2.Qxh7#
- 1...Rc3
- 2.Qxh7#
- 1...Re3
- 2.Qxh7#
- 1...Rf3
- 2.Qxh7#
- 1...Rg3
- 2.Qxh7#
- 1...Rh3
- 2.Qxh7#
- 1...Rxd4
- 2.Qxh7#
- 1...Bd7+
- 2.Kxd7#
- 1...Bf7+
- 2.Kxf7#
- 1...Bg8
- 2.Bxe5#
- 1...Rd1
- Tries
- 1.Kf8?
- threat
- 2.Bxe5#
- 1...Rxd4
- 2.Rxh7#
- 2.Qxh7#
- 1...Re3
- 2.Rxh7#
- 2.Qxh7#
- 1...Rg3
- 2.Rxh7#
- 2.Qxh7#
- 1...Rf3+!
- threat
- 1.Rd8?
- 1...Bd7+
- 2.Kxd7#
- 1...Bf7+
- 2.Kxf7#
- 1...Rxd4
- 2.Qxh7#
- 1...Bh3
- 2.Kf7#
- 1...Rd1
- 2.Qxh7#
- 1...Rd2
- 2.Qxh7#
- 1...Ra3
- 2.Qxh7#
- 1...Rb3
- 2.Qxh7#
- 1...Rc3
- 2.Qxh7#
- 1...Re3
- 2.Qxh7#
- 1...Rf3
- 2.Qxh7#
- 1...Rg3
- 2.Qxh7#
- 1...Rh3
- 2.Qxh7#
- 1...Bg4
- 2.Kf7#
- 1...Bf5
- 2.Kf7#
- 1...Bc8
- 2.Kf7#
- 1...Bg8
- 2.Bxe5#
- 1...Kg8!
- 1...Bd7+
- 1.Qxd3?
- threat
- 2.Qxh7#
- 1...Bd7+
- 2.Kxd7#
- 1...Bf7+
- 2.Kxf7#
- 1...Kg8
- 2.Qxh7#
- 1...Bg8
- 2.Bxe5#
- 1...Bf5!
- threat
- 1.Kf8?
- Keys
- 1.Rd7!
- 1...Bh3+
- 2.Kf7#
- 1...Bg4+
- 2.Kf7#
- 1...Bf5+
- 2.Kf7#
- 1...Bxd7+
- 2.Kxd7#
- 1...Bf7+
- 2.Kxf7#
- 1...Bg8+
- 2.Bxe5#
- 1...Kg8
- 2.Ke7#
- 1...Rxd4
- 2.Qxh7#
- 1...Rd1
- 2.Qxh7#
- 1...Rd2
- 2.Qxh7#
- 1...Ra3
- 2.Qxh7#
- 1...Rb3
- 2.Qxh7#
- 1...Rc3
- 2.Qxh7#
- 1...Re3
- 2.Qxh7#
- 1...Rf3
- 2.Qxh7#
- 1...Rg3
- 2.Qxh7#
- 1...Rh3
- 2.Qxh7#
- 1...Bh3+
- 1.Rd7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- R(a);OGATE::QAR1(A),XP(e)
- R(a);N_SPINR(c),OGATE,XB(B)::QAR1(A),XP(e)
- B(d);CHECK,P_PINR(D)::R(E)+K(F),XB(d)
- B(d);P_PINR(D),SBLOCK::B(B),XR(c)
- Tries
- Try
- K(F);P-FLIGHT
- Threat
- B(B),XR(c)
- Refutation
- R(a);CHECK
- Try
- R(E);
- Vars
- B(d);CHECK,P_PINR(D)::R(E)+K(F),XB(d)
- R(a);N_SPINR(c),OGATE,XB(B)::QAR1(A),XP(e)
- B(d);P_PINR(D)::R(E)+K(F)
- R(a);OGATE::QAR1(A),XP(e)
- B(d);P_PINR(D),SBLOCK::B(B),XR(c)
- Refutation
- K(f);N_SPINR(c),P-FLIGHT
- Try
- Q(A);XR(a)
- Threat
- QAR1(A),XP(e)
- Vars
- B(d);CHECK,P_PINR(D)::R(E)+K(F),XB(d)
- K(f);N_SPINR(c),P-FLIGHT::QAB1(A),XP(e)
- B(d);P_PINR(D),SBLOCK::B(B),XR(c)
- Refutation
- B(d);P_PINR(D)
- Try
- Actual
- R(D);
- Vars
- B(d);CHECK::R(E)+K(F)
- B(d);CHECK,XR(D)::R(E)+K(F),XB(d)
- B(d);CHECK::R(E)+K(F),XB(d)
- B(d);CHECK,SBLOCK::B(B),XR(c)
- K(f);N_SPINR(c),P-FLIGHT,S_CUTB(d)::R(E)+K(F)
- R(a);N_SPINR(c),OGATE,XB(B)::QAR1(A),XP(e)
- R(a);OGATE::QAR1(A),XP(e)
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).