MESON Chess Problem Database
Problem Display
PID: 134265 (8/8/8/1K1p4/p7/N2QP3/2ppp2p/N2k1BbR w - - 0 1)
Jespersen, Karl Lorenz Jesper
Tidskrift for Schack, 1911
#2
7 + 8
| 1829 | The Theory of Pawn Promotion | 1912 |
SOLUTION
- SOUND
- Sets
- 1...Kc1
- 2.Qxc2#
- 1...Ke1
- 2.Qxe2#
- 1...Bf2
- 2.Bxe2#
- 1...Bxe3
- 2.Bxe2#
- 1...c1Q
- 2.Qxe2#
- 1...c1B
- 2.Qxe2#
- 1...c1R
- 2.Qxe2#
- 1...exf1Q
- 2.Qxf1#
- 1...exf1S
- 2.Qxf1#
- 1...exf1B
- 2.Qxf1#
- 1...exf1R
- 2.Qxf1#
- 1...e1Q
- 2.Qxc2#
- 1...e1B
- 2.Qxc2#
- 1...e1R
- 2.Qxc2#
- 1...Kc1
- Tries
- 1.Sb3?
- threat
- 2.Qxe2#
- 2.Qxd2#
- 1...Ke1
- 2.Qxe2#
- 1...Bxe3
- 2.Bxe2#
- 2.Qxe2#
- 1...exf1Q
- 2.Qxf1#
- 1...exf1S
- 2.Qxf1#
- 1...exf1B
- 2.Qxf1#
- 1...exf1R
- 2.Qxf1#
- 2.Qxd2#
- 1...c1Q
- 2.Qxe2#
- 1...c1S
- 2.Qxd2#
- 1...c1B
- 2.Qxe2#
- 1...e1Q
- 2.Qxc2#
- 1...e1S
- 2.Be2#
- 2.Qe2#
- 2.Qxd2#
- 1...e1B
- 2.Be2#
- 2.Qxc2#
- 2.Qe2#
- 1...e1R
- 2.Qxc2#
- 2.Qxd2#
- 1...axb3!
- threat
- 1.Sc4?
- threat
- 2.Qxd2#
- 1...Kc1
- 2.Qxc2#
- 1...Ke1
- 2.Qxe2#
- 1...Bxe3
- 2.Bxe2#
- 1...exf1S
- 2.Qxf1#
- 1...c1Q
- 2.Qxe2#
- 1...c1B
- 2.Qxe2#
- 1...e1Q
- 2.Qxc2#
- 1...e1B
- 2.Qxc2#
- 1...dxc4!
- threat
- 1.Bxe2+?
- 1...Kc1
- 2.Qxc2#
- 1...Ke1!
- 1...Kc1
- 1.Sb3?
- Keys
- 1.Sb1!
- threat
- 2.Qxd2#
- 1...cxb1Q+
- 2.Qxb1#
- 1...cxb1R+
- 2.Qxb1#
- 1...Kc1
- 2.Qxc2#
- 1...Ke1
- 2.Qxe2#
- 1...Bxe3
- 2.Bxe2#
- 1...cxb1S
- 2.Qxb1#
- 1...cxb1B
- 2.Qxb1#
- 1...exf1Q
- 2.Qxf1#
- 1...exf1S
- 2.Qxf1#
- 1...exf1B
- 2.Qxf1#
- 1...c1Q
- 2.Qxe2#
- 1...c1B
- 2.Qxe2#
- 1...e1Q
- 2.Qxc2#
- 1...e1B
- 2.Qxc2#
- threat
- 1.Sb1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 4
- Sets
- K(a);N_SPINP(d),P-FLIGHT::QAR1(E),XP(c)
- K(a);N_SPINP(d),P-FLIGHT::QAR1(E),XP(e)
- B(b);::R(C)+B(B),DCHECK,XP(e)
- B(b);XP(F)::R(C)+B(B),DCHECK,XP(e)
- P(c);SBLOCK::QAB1(E),XP(e)
- P(e);OGATE,P_PINQ(E),XB(B)::QAR2(E),XQ(e)
- P(e);OGATE,XB(B)::QAR2(E),XS(e)
- P(e);OGATE,P_PINQ(E),XB(B)::QAR2(E),XB(e)
- P(e);OGATE,XB(B)::QAR2(E),XR(e)
- P(e);SBLOCK::QAB1(E),XP(c)
- Tries
- Try
- S(A);
- Threat
- DUALS(2)
- Vars
- K(a);N_SPINP(d),P-FLIGHT::QAR1(E),XP(e)
- P(e);OGATE,P_PINQ(E),XB(B)::QAR2(E),XQ(e)
- P(e);OGATE,XB(B)::QAR2(E),XS(e)
- P(e);OGATE,P_PINQ(E),XB(B)::QAR2(E),XB(e)
- P(c);::QAB1(E),XP(e)
- P(c);::QAR1(E),XP(d)
- P(e);SBLOCK::QAB1(E),XP(c)
- Refutation
- P(g);XS(A)
- Try
- S(D);
- Threat
- QAR1(E),XP(d)
- Vars
- K(a);N_SPINP(d),P-FLIGHT::QAR1(E),XP(c)
- K(a);N_SPINP(d),P-FLIGHT::QAR1(E),XP(e)
- B(b);XP(F)::R(C)+B(B),DCHECK,XP(e)
- P(e);OGATE,XB(B)::QAR2(E),XS(e)
- P(c);SBLOCK::QAB1(E),XP(e)
- P(e);SBLOCK::QAB1(E),XP(c)
- Refutation
- P(h);XS(D)
- Try
- B(B);CHECK,P_PINB(b),XP(e)
- Vars
- K(a);N_SPINP(d),P-FLIGHT::QAR1(E),XP(c)
- Refutation
- K(a);N_SPINP(d),P-FLIGHT
- Try
- Actual
- S(D);
- Threat
- QAR1(E),XP(d)
- Vars
- P(c);CHECK,OGATE,XS(D)::QAR2(E),XQ(c)
- P(c);CHECK,OGATE,XS(D)::QAR2(E),XR(c)
- K(a);N_SPINP(d),P-FLIGHT::QAR1(E),XP(c)
- K(a);N_SPINP(d),P-FLIGHT::QAR1(E),XP(e)
- B(b);XP(F)::R(C)+B(B),DCHECK,XP(e)
- P(c);OGATE,XS(D)::QAR2(E),XS(c)
- P(c);OGATE,XS(D)::QAR2(E),XB(c)
- P(e);OGATE,P_PINQ(E),XB(B)::QAR2(E),XQ(e)
- P(e);OGATE,XB(B)::QAR2(E),XS(e)
- P(e);OGATE,P_PINQ(E),XB(B)::QAR2(E),XB(e)
- P(c);SBLOCK::QAB1(E),XP(e)
- P(e);SBLOCK::QAB1(E),XP(c)
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).