MESON Chess Problem Database
Problem Display
PID: 205119 (8/2K5/pNQ5/2PN1B2/3knP2/1R6/r1p1p3/2B3bb w - - 0 1)
Ellerman, Arnoldo
American Chess Bulletin, 1950
#2
9 + 8
| 15148 | Sadier Collection | 2020 |
| 5454 | Near Snap | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Bh2
- 2.Be3#
- 1...Be3
- 2.Bxe3#
- 1...Sd2
- 2.Rd3#
- 1...Sf2
- 2.Be3#
- 2.Rb4#
- 1...Sc3
- 2.Rb4#
- 1...Sg3
- 2.Rd3#
- 2.Rb4#
- 1...Sxc5
- 2.Rb4#
- 2.Qf6#
- 1...Sg5
- 2.Rd3#
- 2.Rb4#
- 1...Sd6
- 2.Rd3#
- 1...Sf6
- 2.Rd3#
- 2.Rb4#
- 1...Bh2
- Tries
- 1.Sc3?
- threat
- 2.Sxe2#
- 2.Qd5#
- 1...Kd3
- 2.Sb5#
- 1...Sxc3
- 2.Rb4#
- 1...Sxc5
- 2.Sxe2#
- 2.Qf6#
- 1...e1Q
- 2.Qd5#
- 1...e1S
- 2.Se2#
- 2.Qd5#
- 1...e1B
- 2.Se2#
- 2.Qd5#
- 1...e1R
- 2.Qd5#
- 1...Bf3
- 2.Qd5#
- 1...Sd2
- 2.Sxe2#
- 1...Sf2
- 2.Sxe2#
- 1...Sg5
- 2.Sxe2#
- 1...Sd6
- 2.Sxe2#
- 1...Sf6
- 2.Sxe2#
- 1...Sg3!
- threat
- 1.Se3?
- threat
- 2.Qd5#
- 1...Sxc5
- 2.Qf6#
- 1...Sd2
- 2.Rd3#
- 1...Sc3
- 2.Rb4#
- 1...Sg3
- 2.Rd3#
- 1...Sg5
- 2.Rd3#
- 1...Sd6
- 2.Rd3#
- 1...Sf6
- 2.Rd3#
- 1...Sf2!
- threat
- 1.Sb4?
- threat
- 2.Rd3#
- 2.Qd5#
- 1...Sxc5
- 2.Qf6#
- 1...e1S
- 2.Qd5#
- 1...Ra3
- 2.Sxc2#
- 2.Qd5#
- 1...Sd2
- 2.Rd3#
- 1...Sf2
- 2.Be3#
- 1...Sg3
- 2.Rd3#
- 1...Sg5
- 2.Rd3#
- 1...Sd6
- 2.Rd3#
- 1...Sf6
- 2.Rd3#
- 1...Sc3!
- threat
- 1.Sf6?
- threat
- 2.Qd5#
- 1...Sxf6
- 2.Rd3#
- 1...Sd2
- 2.Rd3#
- 1...Sf2
- 2.Be3#
- 1...Sc3
- 2.Rb4#
- 1...Sg3
- 2.Rd3#
- 1...Sg5
- 2.Rd3#
- 1...Sd6
- 2.Rd3#
- 1...Sxc5!
- threat
- 1.Bb2+?
- 1...Sc3
- 2.Bxc3#
- 2.Rb4#
- 1...Rxb2!
- 1...Sc3
- 1.Qa4+?
- 1...Kxc5
- 2.Qb4#
- 2.Qc4#
- 1...Rxa4!
- 1...Kxc5
- 1.Qb5?
- threat
- 2.Rd3#
- 2.Rb4#
- 2.Qc4#
- 2.Qb4#
- 1...Sxc5
- 2.Rb4#
- 2.Qc4#
- 2.Qb4#
- 1...e1Q
- 2.Rd3#
- 2.Qc4#
- 1...e1S
- 2.Rb4#
- 2.Qc4#
- 2.Qb4#
- 1...e1B
- 2.Rd3#
- 2.Qc4#
- 1...Rb2
- 2.Rd3#
- 2.Qc4#
- 2.Qb4#
- 1...Ra3
- 2.Rb4#
- 2.Qc4#
- 2.Qb4#
- 1...Ra4
- 2.Rd3#
- 1...Sd2
- 2.Rd3#
- 1...Sf2
- 2.Be3#
- 2.Rb4#
- 2.Qc4#
- 2.Qb4#
- 1...Sc3
- 2.Rb4#
- 2.Qc4#
- 2.Qb4#
- 1...Sd6
- 2.Rd3#
- 1...a5
- 2.Rd3#
- 2.Qc4#
- 1...axb5!
- threat
- 1.Sc3?
- Keys
- 1.Se7!
- threat
- 2.Qd5#
- 1...Sxc5
- 2.Qf6#
- 1...Sd2
- 2.Rd3#
- 1...Sf2
- 2.Be3#
- 1...Sc3
- 2.Rb4#
- 1...Sg3
- 2.Rd3#
- 1...Sg5
- 2.Rd3#
- 1...Sd6
- 2.Rd3#
- 1...Sf6
- 2.Rd3#
- threat
- 1.Se7!
This anticipates 117199(1980)
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 2
- Sets
- B(a);N_GUARD,P_PINP(C)::B(A)
- B(a);N_GUARD::B(A),XB(a)
- S(g);::R1(B)
- S(g);::R(B)
- Tries
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- K(f);P-FLIGHT,P_SPINS(g)::R(B)+S(E)
- S(g);SBLOCK,XS(E)::R(B)
- P(e);::QAR1(H)
- B(b);::QAR1(H)
- S(g);::S(E),XP(e)
- Refutation
- S(g);
- Try
- S(E);
- Threat
- QAR1(H)
- Vars
- S(g);N_GUARD,SBLOCK,XP(D)::QAB(H)
- S(g);::R1(B)
- S(g);SBLOCK::R(B)
- Refutation
- S(g);
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- S(g);N_GUARD,SBLOCK,XP(D)::QAB(H)
- P(e);::QAR1(H)
- S(g);::R1(B)
- S(g);S_CUTB(a)::B(A)
- Refutation
- S(g);
- Try
- S(E);
- Threat
- QAR1(H)
- Vars
- S(g);XS(E)::R1(B)
- S(g);::R1(B)
- S(g);S_CUTB(a)::B(A)
- S(g);SBLOCK::R(B)
- Refutation
- S(g);XP(D)
- Try
- B(A);CHECK
- Refutation
- R(c);XB(A)
- Try
- Q(H);CHECK
- Refutation
- R(c);XQ(H)
- Try
- Q(H);
- Threat
- DUALS(4)
- Vars
- R(c);::R1(B)
- S(g);::R1(B)
- Refutation
- P(h);XQ(H)
- Try
- Actual
- S(E);
- Threat
- QAR1(H)
- Vars
- S(g);N_GUARD,SBLOCK,XP(D)::QAB(H)
- S(g);::R1(B)
- S(g);S_CUTB(a)::B(A)
- S(g);SBLOCK::R(B)
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