MESON Chess Problem Database
Problem Display
PID: 65068 (1NK5/pN6/4RP2/1kB3Q1/1n6/p2PP3/1b6/1RrB4 w - - 0 1)
Ellerman, Arnoldo
4th HM., 8. American Chess Congress, 1921
#2
11 + 6
| 3132 | The Good Companion Two-Mover | 1922 |
SOLUTION
- SOUND
- Sets
- 1...Rxc5+
- 2.Qxc5#
- 1...Ba1
- 2.Rxb4#
- 1...Bc3
- 2.Bd4#
- 1...Bd4
- 2.Rxb4#
- 1...Be5
- 2.Rxb4#
- 1...Bxf6
- 2.Rxb4#
- 1...a5
- 2.Sd6#
- 2.Rb6#
- 1...a6
- 2.Rb6#
- 1...Rxc5+
- Tries
- 1.Ra6?
- threat
- 2.Sd6#
- 2.Ba4#
- 2.Ra5#
- 1...Rxc5+
- 2.Qxc5#
- 1...Rxd1
- 2.Sd6#
- 2.Ra5#
- 1...Sxd3
- 2.Sd6#
- 1...Rc2
- 2.Sd6#
- 2.Ra5#
- 1...Be5
- 2.Ba4#
- 2.Rxb4#
- 2.Ra5#
- 1...Sc2
- 2.Sd6#
- 2.Bxa3#
- 2.Bd6#
- 2.Be7#
- 2.Bf8#
- 2.Ra5#
- 1...Sd5
- 2.Ba4#
- 2.Ra5#
- 1...Sc6
- 2.Sd6#
- 2.Ba4#
- 1...Sxa6!
- threat
- 1.Qf4?
- threat
- 2.Qxb4#
- 1...Sxd3
- 2.Ba4#
- 2.Qa4#
- 1...Rc4
- 2.Qxc4#
- 2.dxc4#
- 1...Bc3
- 2.Qc4#
- 1...Bd4
- 2.Rxb4#
- 1...Sa2
- 2.Ba4#
- 2.Qa4#
- 1...Sc2
- 2.Qc4#
- 1...Sd5
- 2.Ba4#
- 2.Qa4#
- 1...Sa6
- 2.Ba4#
- 2.Qa4#
- 1...Sc6
- 2.Ba4#
- 2.Qa4#
- 1...a5
- 2.Rb6#
- 1...Rxc5+!
- threat
- 1.Qh4?
- threat
- 2.Qxb4#
- 1...Sxd3
- 2.Ba4#
- 2.Qa4#
- 1...Rc4
- 2.Qxc4#
- 2.dxc4#
- 1...Bc3
- 2.Qc4#
- 1...Bd4
- 2.Rxb4#
- 1...Sa2
- 2.Ba4#
- 2.Qa4#
- 1...Sc2
- 2.Qc4#
- 1...Sd5
- 2.Ba4#
- 2.Qa4#
- 1...Sa6
- 2.Ba4#
- 2.Qa4#
- 1...Sc6
- 2.Ba4#
- 2.Qa4#
- 1...a5
- 2.Rb6#
- 1...Rxc5+!
- threat
- 1.Qg4?
- threat
- 2.Qxb4#
- 1...Sxd3
- 2.Ba4#
- 2.Qa4#
- 1...Rc4
- 2.Qxc4#
- 2.dxc4#
- 1...Bc3
- 2.Qc4#
- 1...Bd4
- 2.Rxb4#
- 1...Sa2
- 2.Ba4#
- 2.Qa4#
- 1...Sc2
- 2.Qc4#
- 1...Sd5
- 2.Ba4#
- 2.Qa4#
- 1...Sa6
- 2.Ba4#
- 2.Qa4#
- 1...Sc6
- 2.Ba4#
- 2.Qa4#
- 1...a5
- 2.Rb6#
- 1...Rxc5+!
- threat
- 1.Ra6?
- Keys
- 1.Re4!
- threat
- 2.Rxb4#
- 1...Rxc5+
- 2.Qxc5#
- 1...Sxd3
- 2.Ba4#
- 1...Rc4
- 2.dxc4#
- 1...Bc3
- 2.Bd4#
- 1...Bd4
- 2.Rxb4#
- 1...Sa2
- 2.Ba4#
- 1...Sc2
- 2.Bxa7#
- 1...Sd5
- 2.Ba4#
- 1...Sa6
- 2.Ba4#
- 1...Sc6
- 2.Ba4#
- 1...a5
- 2.Sd6#
- threat
- 1.Re4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 8
- REMOVED MATES = 4
- Sets
- R(a);CHECK,OGATE,P_SPINR(a),XB(E)::QAR1(F),XR(a)
- B(b);OGATE,P_SPINS(d)::R1(A),XS(d)
- B(b);N_PINB(E),P_SPINS(d)::QAR(F)+B(E)
- B(b);OGATE,P_SPINS(d),XP(H)::R1(A),XS(d)
- P(f);N_GUARD::R1(G)
- Tries
- Try
- R(G);
- Threat
- DUALS(3)
- Vars
- R(a);CHECK,OGATE,P_SPINR(a),XB(E)::QAR1(F),XR(a)
- S(d);P_SPINB(b),XP(C)::S(I)
- Refutation
- S(d);P_SPINB(b),XR(G)
- Try
- Q(F);
- Threat
- QAR1(F),XS(d)
- Vars
- B(b);N_PINB(E),P_SPINS(d),S_CUTR(a)::QAB1(F)
- B(b);OGATE,P_SPINS(d)::R1(A),XS(d)
- S(d);N_PINB(E),P_SPINB(b),S_CUTR(a)::QAB1(F)
- P(f);N_GUARD::R1(G)
- Refutation
- R(a);CHECK,XB(E)
- Try
- Q(F);
- Threat
- QAR1(F),XS(d)
- Vars
- B(b);N_PINB(E),P_SPINS(d),S_CUTR(a)::QAB1(F)
- B(b);OGATE,P_SPINS(d)::R1(A),XS(d)
- S(d);N_PINB(E),P_SPINB(b),S_CUTR(a)::QAB1(F)
- P(f);N_GUARD::R1(G)
- Refutation
- R(a);CHECK,XB(E)
- Try
- Q(F);
- Threat
- QAR1(F),XS(d)
- Vars
- B(b);N_PINB(E),P_SPINS(d),S_CUTR(a)::QAB1(F)
- B(b);OGATE,P_SPINS(d)::R1(A),XS(d)
- S(d);N_PINB(E),P_SPINB(b),S_CUTR(a)::QAB1(F)
- P(f);N_GUARD::R1(G)
- Refutation
- R(a);CHECK,XB(E)
- Try
- Actual
- R(G);
- Threat
- R1(G),XS(d)
- Vars
- R(a);CHECK,OGATE,P_SPINR(a),XB(E)::QAR1(F),XR(a)
- S(d);P_SPINB(b),XP(C)::B(B)
- R(a);OGATE::P(C),XR(a)
- B(b);N_PINB(E),P_SPINS(d)::QAR(F)+B(E)
- B(b);OGATE,P_SPINS(d)::R1(A),XS(d)
- S(d);P_SPINB(b)::B(B)
- S(d);N_PINB(E),P_SPINB(b)::QAR(F)+B(E),XP(f)
- S(d);N_PINB(E),P_SPINB(b)::B(B)
- P(f);SBLOCK::S(I)
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