MESON Chess Problem Database
Problem Display
PID: 80627 (2n1N3/1R6/4Pp2/Q1p2RB1/2bbk1K1/3rpN2/8/1B6 w - - 0 1)
Ellerman, Arnoldo
Good Companions (February), 1917
#2
9 + 8
| 15 | British Chess Magazine | 1917 |
| 3391 | Het Half Pin Thema | 1924 |
SOLUTION
- SOUND
- Sets
- 1...Bd5
- 2.Rf4#
- 1...Sb6
- 2.Sd6#
- 1...Sd6
- 2.Sxd6#
- 1...Sa7
- 2.Sd6#
- 1...Se7
- 2.Sd6#
- 1...e2
- 2.Sd2#
- 1...fxg5
- 2.Sxg5#
- 1...Bd5
- Tries
- 1.Bxf6?
- threat
- 2.Sg5#
- 1...Bxf6
- 2.Sxf6#
- 1...Be5
- 2.Rxe5#
- 1...e2!
- threat
- 1.Re5+?
- 1...fxe5
- 2.Sf6#
- 1...Bxe5!
- 1...fxe5
- 1.Qe1?
- threat
- 2.Sd2#
- 1...Ba1
- 2.Qxe3#
- 1...Bb2
- 2.Qxe3#
- 1...Bc3
- 2.Qxe3#
- 1...Be5!
- threat
- 1.Qc7?
- threat
- 2.Qf4#
- 1...fxg5
- 2.Sxg5#
- 1...Sd6
- 2.Sxd6#
- 1...Be5!
- threat
- 1.Qxc5?
- threat
- 2.Rf4#
- 2.Qxd4#
- 1...Bxe6
- 2.Qxd4#
- 1...Bxc5
- 2.Sxf6#
- 1...fxg5
- 2.Sxg5#
- 2.Qxd4#
- 1...Ba1
- 2.Rf4#
- 2.Qxe3#
- 1...Bb2
- 2.Rf4#
- 2.Qxe3#
- 1...Bc3
- 2.Rf4#
- 2.Qxe3#
- 1...e2
- 2.Sd2#
- 2.Qxd4#
- 1...Be5!
- threat
- 1.Qa8?
- 1...Bxe6
- 2.Re7#
- 1...fxg5
- 2.Sxg5#
- 1...Be5
- 2.Rb4#
- 1...Ba2
- 2.Rb3#
- 1...Bb3
- 2.Rxb3#
- 1...Bb5
- 2.Rxb5#
- 1...Bd5
- 2.Rf4#
- 1...Ba1
- 2.Rb4#
- 1...Bb2
- 2.Rb4#
- 1...Bc3
- 2.Rb4#
- 1...Sb6
- 2.Sd6#
- 1...Sd6
- 2.Sxd6#
- 1...Sa7
- 2.Sd6#
- 1...Se7
- 2.Sd6#
- 1...e2
- 2.Sd2#
- 1...Ba6!
- 1...Bxe6
- 1.Bxf6?
- Keys
- 1.Rb4!
- 1...Bxe6
- 2.Sxf6#
- 1...cxb4
- 2.Rf4#
- 1...fxg5
- 2.Sxg5#
- 1...Be5
- 2.Qa8#
- 1...Ba2
- 2.Sxf6#
- 1...Bb3
- 2.Sxf6#
- 1...Bb5
- 2.Sxf6#
- 1...Bd5
- 2.Sxf6#
- 2.Rf4#
- 1...Ba6
- 2.Sxf6#
- 1...Ba1
- 2.Qa8#
- 1...Bb2
- 2.Qa8#
- 1...Bc3
- 2.Qa8#
- 1...Sb6
- 2.Sd6#
- 1...Sd6
- 2.Sxd6#
- 1...Sa7
- 2.Sd6#
- 1...Se7
- 2.Sd6#
- 1...e2
- 2.Sd2#
- 1...Bxe6
- 1.Rb4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 10
- REMOVED MATES = 1
- Sets
- B(c);SBLOCK::R1(E)
- S(h);N_GUARD::S(I)
- S(h);N_GUARD::S(I),XS(h)
- P(b);N_GUARD::S(B)
- P(g);XB(F)::S(B),XP(g)
- Tries
- Try
- B(F);XP(g)
- Threat
- S(B)
- Vars
- B(d);XB(F)::S(I),XB(d)
- B(d);N_GUARD::R1(E),XB(d)
- Refutation
- P(b);
- Try
- R(E);CHECK
- Vars
- P(g);XR(E)::S(I)
- Refutation
- B(d);XR(E)
- Try
- Q(D);P_PINP(b)
- Threat
- S(B)
- Vars
- B(d);N_GUARD::QAR1(D),XP(b)
- Refutation
- B(d);
- Try
- Q(D);
- Threat
- QAR1(D)
- Vars
- P(g);XB(F)::S(B),XP(g)
- S(h);N_GUARD::S(I),XS(h)
- Refutation
- B(d);
- Try
- Q(D);XP(f)
- Threat
- DUALS(2)
- Vars
- B(c);P_PINR(E),XP(G)::QAR1(D),XB(d)
- B(d);N_GUARD,XQ(D)::S(I),XP(g)
- Refutation
- B(d);
- Try
- Q(D);
- Vars
- B(c);N_GUARD,P_PINR(E),XP(G)::QAB(D)+R(H)
- P(g);XB(F)::S(B),XP(g)
- B(d);S_CUTB(c)::QAB(D)+R(H)
- B(c);N_GUARD::QAB(D)+R(H)
- B(c);N_GUARD::QAB(D)+R(H),XB(c)
- B(c);SBLOCK::R1(E)
- S(h);N_GUARD::S(I)
- S(h);N_GUARD::S(I),XS(h)
- P(b);N_GUARD::S(B)
- Refutation
- B(c);
- Try
- Actual
- R(H);
- Vars
- B(c);P_PINR(E),P_SPINB(d),XP(G)::S(I),XP(g)
- P(f);XR(H)::R1(E)
- P(g);XB(F)::S(B),XP(g)
- B(d);P_SPINB(c)::QAB(D)
- B(c);P_SPINB(d)::S(I),XP(g)
- S(h);N_GUARD::S(I)
- S(h);N_GUARD::S(I),XS(h)
- P(b);N_GUARD::S(B)
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