MESON Chess Problem Database
Problem Display
PID: 83624 (2B2nr1/4B2p/K1R3q1/N3k1pN/2R1P2p/2Pb1P2/2pP4/n3Q3 w - - 0 1)
Ellerman, Arnoldo
Western Morning News, 1932
#2
12 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qxe4
- 2.Rc5#
- 1...Qf5
- 2.Bd6#
- 2.Rc5#
- 1...Qf7
- 2.Bd6#
- 1...Qe8
- 2.Bd6#
- 2.Bf6#
- 2.Rc5#
- 1...Qxc6+
- 2.Sxc6#
- 1...Qd6
- 2.Bxd6#
- 1...Qf6
- 2.Bxf6#
- 1...Qg7
- 2.Bd6#
- 2.Rc5#
- 1...Bf1
- 2.d4#
- 1...Be2
- 2.d4#
- 1...Bxc4+
- 2.Sxc4#
- 1...Bxe4
- 2.Rc5#
- 1...Se6
- 2.Bd6#
- 1...h3
- 2.Qg3#
- 1...g4
- 2.f4#
- 1...Qxe4
- Tries
- 1.Re6+?
- 1...Sxe6
- 2.Sc6#
- 1...Qxe6+!
- 1...Sxe6
- 1.Rf6?
- threat
- 2.Sc6#
- 2.Bd6#
- 1...Bxc4+
- 2.Sxc4#
- 1...Qxe4
- 2.Rf5#
- 1...Qxh5
- 2.Sc6#
- 2.Rf5#
- 1...Bxe4
- 2.Rc5#
- 1...Qe8
- 2.Bd6#
- 2.Rf5#
- 1...Se6
- 2.Sc6#
- 1...Qxf6+!
- threat
- 1.Rxg6?
- threat
- 2.Sc6#
- 2.Bd6#
- 1...Bxc4+
- 2.Sxc4#
- 1...Bxe4
- 2.Rc5#
- 2.Qxe4#
- 1...Sxg6
- 2.Sc6#
- 1...hxg6
- 2.Sc6#
- 1...Se6
- 2.Sc6#
- 2.Rxe6#
- 1...Rxg6+!
- threat
- 1.Qf2?
- threat
- 2.Qd4#
- 2.Qc5#
- 2.Qh2#
- 1...Qxc6+
- 2.Sxc6#
- 1...Bxc4+
- 2.Sxc4#
- 1...Qxh5
- 2.Qh2#
- 1...Bxe4
- 2.Qd4#
- 1...Qf7
- 2.Bd6#
- 2.Qd4#
- 1...Qf5
- 2.Bd6#
- 2.Rc5#
- 2.Qd4#
- 2.Qc5#
- 1...Qd6
- 2.Bxd6#
- 2.Qh2#
- 1...Qe6
- 2.Qd4#
- 2.Qh2#
- 1...Qf6
- 2.Bxf6#
- 2.Qd4#
- 2.Qc5#
- 1...Sb3
- 2.Qh2#
- 1...Se6
- 2.Bd6#
- 1...Sd7
- 2.Qd4#
- 2.Qh2#
- 1...g4
- 2.Qd4#
- 2.Qc5#
- 2.f4#
- 1...Qxe4!
- threat
- 1.Qg1?
- threat
- 2.Qh2#
- 2.Qd4#
- 2.Qc5#
- 1...Qxc6+
- 2.Sxc6#
- 1...Bxc4+
- 2.Sxc4#
- 1...Qxh5
- 2.Qh2#
- 1...Bxe4
- 2.Qd4#
- 1...Qf7
- 2.Bd6#
- 2.Qd4#
- 1...Qf5
- 2.Bd6#
- 2.Rc5#
- 2.Qd4#
- 2.Qc5#
- 1...Qd6
- 2.Bxd6#
- 2.Qh2#
- 1...Qe6
- 2.Qh2#
- 2.Qd4#
- 1...Qf6
- 2.Bxf6#
- 2.Qd4#
- 2.Qc5#
- 1...Sb3
- 2.Qh2#
- 1...Se6
- 2.Bd6#
- 1...Sd7
- 2.Qh2#
- 2.Qd4#
- 1...g4
- 2.Qd4#
- 2.Qc5#
- 2.f4#
- 1...Qxe4!
- threat
- 1.Qe3?
- threat
- 2.Qd4#
- 2.Qc5#
- 1...Qxc6+
- 2.Sxc6#
- 1...Bxc4+
- 2.Sxc4#
- 1...Qxe4
- 2.Rc5#
- 1...Qxh5
- 2.Bf6#
- 2.Rc5#
- 1...Bxe4
- 2.Rc5#
- 2.Qd4#
- 1...Qf7
- 2.Bd6#
- 2.Qd4#
- 1...Qd6
- 2.Bxd6#
- 1...Qe6
- 2.Qd4#
- 1...Se6
- 2.Bd6#
- 1...Sd7
- 2.Qd4#
- 1...Sb3!
- threat
- 1.Re6+?
- Keys
- 1.Qe2!
- threat
- 2.Qh2#
- 1...Qxc6+
- 2.Sxc6#
- 1...Bxc4+
- 2.Sxc4#
- 1...Qxe4
- 2.Rc5#
- 1...Bxe2
- 2.d4#
- 1...Bxe4
- 2.Rc5#
- 1...Qf7
- 2.Bd6#
- 1...Qf5
- 2.Bd6#
- 2.Rc5#
- 1...Qf6
- 2.Bxf6#
- 1...Se6
- 2.Bd6#
- 1...g4
- 2.f4#
- threat
- 1.Qe2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 3
- Sets
- Q(g);OGATE,P_SPINQ(g),XP(F)::R(J)
- Q(g);N_GUARD::B(K)
- Q(g);CHECK,XR(J)::S(G),XQ(g)
- Q(g);N_GUARD::B(K),XQ(g)
- B(c);OGATE::P(B)
- B(c);CHECK,P_PINR(J),XR(E)::S(G),XB(c)
- B(c);N_PINR(E),P_PINR(J),P_SPINB(c),XP(F)::R(E)
- S(i);S_CUTQ(g)::B(K)
- P(d);N_GUARD::QAB(A)
- P(f);N_GUARD::P(D)
- Tries
- Try
- R(J);CHECK
- Vars
- S(i);XR(J)::S(G)
- Refutation
- Q(g);CHECK,XR(J)
- Try
- R(J);
- Threat
- DUALS(2)
- Vars
- B(c);CHECK,P_PINR(J),XR(E)::S(G),XB(c)
- Q(g);OGATE,P_SPINQ(g),XP(F)::R1(J)
- B(c);N_PINR(E),P_PINR(J),P_SPINB(c),XP(F)::R(E)
- S(i);::S(G)
- Refutation
- Q(g);CHECK,XR(J)
- Try
- R(J);XQ(g)
- Threat
- DUALS(2)
- Vars
- B(c);CHECK,XR(E)::S(G),XB(c)
- S(i);XR(J)::S(G)
- P(h);XR(J)::S(G)
- Refutation
- R(j);CHECK,XR(J)
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- Q(g);CHECK,XR(J)::S(G),XQ(g)
- B(c);CHECK,P_PINR(J),XR(E)::S(G),XB(c)
- Q(g);XS(H)::QAB(A)
- B(c);N_PINR(E),P_PINR(J),XP(F)::QAB1(A)
- S(a);::QAB(A)
- S(i);S_CUTQ(g)::B(K)
- Refutation
- Q(g);XP(F)
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- Q(g);CHECK,XR(J)::S(G),XQ(g)
- B(c);CHECK,P_PINR(J),XR(E)::S(G),XB(c)
- Q(g);XS(H)::QAB(A)
- B(c);N_PINR(E),P_PINR(J),XP(F)::QAB1(A)
- S(a);::QAB(A)
- S(i);S_CUTQ(g)::B(K)
- Refutation
- Q(g);XP(F)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- Q(g);CHECK,XR(J)::S(G),XQ(g)
- B(c);CHECK,P_PINR(J),XR(E)::S(G),XB(c)
- Q(g);OGATE,P_SPINQ(g),XP(F)::R(J)
- Q(g);N_GUARD::B(K),XQ(g)
- Q(g);::QAB1(A)
- S(i);S_CUTQ(g)::B(K)
- S(i);::QAB1(A)
- Refutation
- S(a);
- Try
- Actual
- Q(A);
- Threat
- QAB(A)
- Vars
- Q(g);CHECK,XR(J)::S(G),XQ(g)
- B(c);CHECK,P_PINR(J),XR(E)::S(G),XB(c)
- Q(g);OGATE,P_SPINQ(g),XP(F)::R(J)
- B(c);OGATE,XQ(A)::P(B)
- B(c);N_PINR(E),P_PINR(J),P_SPINB(c),XP(F)::R(E)
- Q(g);N_GUARD::B(K)
- Q(g);N_GUARD::B(K),XQ(g)
- S(i);S_CUTQ(g)::B(K)
- P(f);N_GUARD::P(D)
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).