MESON Chess Problem Database
Problem Display
PID: 247702 (KB1NN3/1p1B4/3P3p/4k1p1/4P1Q1/2P3P1/bppn4/1q1rRr2 w - - 0 1)
Ellerman, Arnoldo
2nd Comm., Stratford Express, 1949
#2
11 + 11
| 14867 | BCPS Library | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rxe1
- 2.Qf5#
- 1...Rg1
- 2.Qf5#
- 1...Rh1
- 2.Qf5#
- 1...Rf5
- 2.Qxf5#
- 1...Be6
- 2.Qxe6#
- 1...Sb3
- 2.Qe6#
- 1...Sf3
- 2.Qf5#
- 1...Sc4
- 2.Qe6#
- 1...Sxe4
- 2.Qxe4#
- 1...b5
- 2.Sc6#
- 1...b6
- 2.Sc6#
- 1...Rxe1
- Tries
- 1.Kxb7?
- threat
- 2.Sc6#
- 1...Sxe4
- 2.Qxe4#
- 1...Bd5+!
- threat
- 1.Ba4?
- threat
- 2.d7#
- 1...Sxe4
- 2.Qxe4#
- 1...Sb3
- 2.Qe6#
- 1...Sf3
- 2.Qf5#
- 1...Sc4
- 2.Qe6#
- 1...Rf6!
- threat
- 1.Bb5?
- threat
- 2.d7#
- 1...Sxe4
- 2.Qxe4#
- 1...Sb3
- 2.Qe6#
- 1...Sf3
- 2.Qf5#
- 1...Sc4
- 2.Qe6#
- 1...Rf6!
- threat
- 1.Bf5?
- threat
- 2.d7#
- 1...Sxe4
- 2.Qxe4#
- 1...Sb3
- 2.Sf7#
- 1...Sc4
- 2.Sf7#
- 1...Sf3!
- threat
- 1.Bc6?
- threat
- 2.d7#
- 1...Sxe4
- 2.Rxe4#
- 2.Qxe4#
- 1...Sb3
- 2.Qe6#
- 1...Sf3
- 2.Qf5#
- 1...Sc4
- 2.Qe6#
- 1...Rf6!
- threat
- 1.Bc8?
- threat
- 2.d7#
- 1...Sxe4
- 2.Qxe4#
- 1...Sb3
- 2.Qe6#
- 1...Sf3
- 2.Qf5#
- 1...Sc4
- 2.Qe6#
- 1...Rf6!
- threat
- 1.Rxf1?
- threat
- 2.Rf5#
- 2.Qf5#
- 1...Sxf1
- 2.Qf5#
- 1...Be6
- 2.Qxe6#
- 1...Sf3
- 2.Qf5#
- 1...Rxf1!
- threat
- 1.Qxg5+?
- 1...Rf5
- 2.Qxf5#
- 1...hxg5!
- 1...Rf5
- 1.Kxb7?
- Keys
- 1.Ba7!
- threat
- 2.Bd4#
- 1...Sxe4
- 2.Qxe4#
- 1...Sb3
- 2.Qe6#
- 1...Sf3
- 2.Qf5#
- 1...Sc4
- 2.Qe6#
- 1...b6
- 2.Sc6#
- threat
- 1.Ba7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 6
- Sets
- R(c);N_GUARD,XR(A)::QAR1(E)
- R(c);N_GUARD::QAR1(E)
- R(c);N_GUARD::QAR1(E),XR(c)
- B(d);N_GUARD::QAR1(E),XB(d)
- S(g);S_CUTB(d)::QAR1(E)
- S(g);S_CUTR(c)::QAR1(E)
- S(g);OGATE,P_SPINS(g),XP(D)::QAR1(E),XS(g)
- P(k);N_GUARD::S(J)
- Tries
- Try
- K(H);S_FLIGHT,XP(k)
- Threat
- S(J)
- Vars
- S(g);OGATE,P_SPINS(g),XP(D)::QAR1(E),XS(g)
- Refutation
- B(d);CHECK
- Try
- B(G);
- Threat
- B(I)+P(F)
- Vars
- S(g);OGATE,P_SPINS(g),XP(D)::QAR1(E),XS(g)
- S(g);S_CUTB(d)::QAR1(E)
- S(g);S_CUTR(c)::QAR1(E)
- Refutation
- R(c);
- Try
- B(G);
- Threat
- B(I)+P(F)
- Vars
- S(g);OGATE,P_SPINS(g),XP(D)::QAR1(E),XS(g)
- S(g);S_CUTB(d)::QAR1(E)
- S(g);S_CUTR(c)::QAR1(E)
- Refutation
- R(c);
- Try
- B(G);
- Threat
- B(I)+P(F)
- Vars
- S(g);OGATE,P_SPINS(g),XP(D)::QAR1(E),XS(g)
- S(g);S_CUTB(d)::S(J)
- Refutation
- S(g);
- Try
- B(G);
- Threat
- B(I)+P(F)
- Vars
- S(g);S_CUTB(d)::QAR1(E)
- S(g);S_CUTR(c)::QAR1(E)
- Refutation
- R(c);
- Try
- B(G);
- Threat
- B(I)+P(F)
- Vars
- S(g);OGATE,P_SPINS(g),XP(D)::QAR1(E),XS(g)
- S(g);S_CUTB(d)::QAR1(E)
- S(g);S_CUTR(c)::QAR1(E)
- Refutation
- R(c);
- Try
- R(A);XR(c)
- Threat
- DUALS(2)
- Vars
- S(g);XR(A)::QAR1(E)
- B(d);N_GUARD::QAR1(E),XB(d)
- S(g);::QAR1(E)
- Refutation
- R(b);XR(A)
- Try
- Q(E);CHECK,XP(i)
- Vars
- R(c);N_GUARD,P_SPINR(c)::QAR1(E),XR(c)
- Refutation
- P(j);XQ(E)
- Try
- Actual
- B(I);
- Threat
- B(I)
- Vars
- S(g);OGATE,P_SPINS(g),XP(D)::QAR1(E),XS(g)
- S(g);S_CUTB(d)::QAR1(E)
- S(g);S_CUTR(c)::QAR1(E)
- P(k);N_GUARD::S(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).