MESON Chess Problem Database
Problem Display
PID: 184293 (2b3NB/3p3R/1KPkp3/5P1P/1p6/1B6/1PRp4/3r4 w - - 0 1)
Siotis, Nikos
The Problemist, 1980
#2
10 + 7
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Rxd2#
- 1...Rb1
- 2.Rxd2#
- 1...Rc1
- 2.Rxd2#
- 1...Re1
- 2.Rxd2#
- 1...Rf1
- 2.Rxd2#
- 1...Rg1
- 2.Rxd2#
- 1...Rh1
- 2.Rxd2#
- 1...Ba6
- 2.Rxd7#
- 1...Bb7
- 2.Rxd7#
- 1...exf5
- 2.Rh6#
- 1...e5
- 2.Rh6#
- 1...dxc6
- 2.Rxc6#
- 1...Ra1
- Tries
- 1.Sf6?
- threat
- 2.Se4#
- 2.Se8#
- 1...exf5
- 2.Se8#
- 1...Re1
- 2.Se8#
- 1...Ke5!
- threat
- 1.Sh6?
- 1...exf5
- 2.Sxf5#
- 1...dxc6
- 2.Rxc6#
- 1...Ra1
- 2.Rxd2#
- 1...Rb1
- 2.Rxd2#
- 1...Rc1
- 2.Rxd2#
- 1...Re1
- 2.Rxd2#
- 1...Rf1
- 2.Rxd2#
- 1...Rg1
- 2.Rxd2#
- 1...Rh1
- 2.Rxd2#
- 1...Ba6
- 2.Rxd7#
- 1...Bb7
- 2.Rxd7#
- 1...e5!
- 1...exf5
- 1.Ba2?
- 1...exf5
- 2.Rh6#
- 1...dxc6
- 2.Rxc6#
- 1...Ra1
- 2.Rxd2#
- 1...Rb1
- 2.Rxd2#
- 1...Rc1
- 2.Rxd2#
- 1...Re1
- 2.Rxd2#
- 1...Rf1
- 2.Rxd2#
- 1...Rg1
- 2.Rxd2#
- 1...Rh1
- 2.Rxd2#
- 1...Ba6
- 2.Rxd7#
- 1...Bb7
- 2.Rxd7#
- 1...e5
- 2.Rh6#
- 1...b3!
- 1...exf5
- 1.Bf6?
- 1...dxc6
- 2.Rxc6#
- 1...Ra1
- 2.Rxd2#
- 1...Rb1
- 2.Rxd2#
- 1...Rc1
- 2.Rxd2#
- 1...Re1
- 2.Rxd2#
- 1...Rf1
- 2.Rxd2#
- 1...Rg1
- 2.Rxd2#
- 1...Rh1
- 2.Rxd2#
- 1...Ba6
- 2.Rxd7#
- 1...Bb7
- 2.Rxd7#
- 1...e5
- 2.Be7#
- 1...exf5!
- 1...dxc6
- 1.Rc3?
- threat
- 2.Rd3#
- 1...Ba6
- 2.Rxd7#
- 1...bxc3!
- threat
- 1.Rc4?
- threat
- 2.Rd4#
- 1...Kd5
- 2.Rd4#
- 1...e5!
- threat
- 1.Rc5?
- threat
- 2.Be5#
- 1...e5
- 2.Bxe5#
- 2.Rd5#
- 2.Rh6#
- 1...Re1!
- threat
- 1.Rf7?
- 1...dxc6
- 2.Rxc6#
- 1...Ba6
- 2.Rxd7#
- 1...Ra1
- 2.Rxd2#
- 1...Rb1
- 2.Rxd2#
- 1...Rc1
- 2.Rxd2#
- 1...Re1
- 2.Rxd2#
- 1...Rf1
- 2.Rxd2#
- 1...Rg1
- 2.Rxd2#
- 1...Rh1
- 2.Rxd2#
- 1...Bb7
- 2.Rxd7#
- 1...e5
- 2.Rf6#
- 1...exf5!
- 1...dxc6
- 1.fxe6?
- 1...dxc6
- 2.Rxc6#
- 1...Ba6
- 2.Rxd7#
- 1...Ra1
- 2.Rxd2#
- 1...Rb1
- 2.Rxd2#
- 1...Rc1
- 2.Rxd2#
- 1...Re1
- 2.Rxd2#
- 1...Rf1
- 2.Rxd2#
- 1...Rg1
- 2.Rxd2#
- 1...Rh1
- 2.Rxd2#
- 1...Bb7
- 2.Rxd7#
- 1...dxe6!
- 1...dxc6
- 1.cxd7?
- threat
- 2.Rc6#
- 2.dxc8S#
- 1...Rc1
- 2.Rxd2#
- 2.dxc8S#
- 1...Ba6
- 2.Rc6#
- 2.d8Q#
- 2.d8R#
- 1...Bb7
- 2.d8Q#
- 2.d8R#
- 1...Bxd7!
- threat
- 1.Sf6?
- Keys
- 1.Re7!
- 1...exf5
- 2.Be5#
- 1...dxc6
- 2.Rxc6#
- 1...Ba6
- 2.Rxd7#
- 1...Ra1
- 2.Rxd2#
- 1...Rb1
- 2.Rxd2#
- 1...Rc1
- 2.Rxd2#
- 1...Re1
- 2.Rxd2#
- 1...Rf1
- 2.Rxd2#
- 1...Rg1
- 2.Rxd2#
- 1...Rh1
- 2.Rxd2#
- 1...Bb7
- 2.Rxd7#
- 1...e5
- 2.Bxe5#
- 1...exf5
- 1.Re7!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(a);N_GUARD::R(B),XP(b)
- B(g);N_GUARD::R1(H),XP(f)
- P(e);OGATEB,XP(D)::R(H)
- P(e);OGATEB::R(H)
- P(f);OGATE,XP(G)::R1(B),XP(f)
- Tries
- Try
- S(I);
- Threat
- DUALS(2)
- Vars
- P(e);XP(D)::S(I)
- R(a);::S(I)
- Refutation
- K(d);S_FLIGHT
- Try
- S(I);
- Vars
- P(e);XP(D)::S(I),XP(e)
- P(f);OGATE,XP(G)::R1(B),XP(f)
- R(a);N_GUARD::R(B),XP(b)
- B(g);N_GUARD::R1(H),XP(f)
- Refutation
- P(e);
- Try
- B(C);
- Vars
- P(e);OGATEB,XP(D)::R(H)
- P(f);OGATE,XP(G)::R1(B),XP(f)
- R(a);N_GUARD::R(B),XP(b)
- B(g);N_GUARD::R1(H),XP(f)
- P(e);OGATEB::R(H)
- Refutation
- P(c);
- Try
- B(J);
- Vars
- P(f);OGATE,XP(G)::R1(B),XP(f)
- R(a);N_GUARD::R(B),XP(b)
- B(g);N_GUARD::R1(H),XP(f)
- P(e);SBLOCK::B(J)
- Refutation
- P(e);XP(D)
- Try
- R(B);
- Threat
- R(B)
- Vars
- B(g);N_GUARD::R1(H),XP(f)
- Refutation
- P(c);XR(B)
- Try
- R(B);
- Threat
- R(B)
- Vars
- K(d);P-FLIGHT::B(C)+R(B),DCHECK
- Refutation
- P(e);
- Try
- R(B);
- Threat
- B(J)
- Refutation
- R(a);
- Try
- R(H);
- Vars
- P(f);OGATE,XP(G)::R1(B),XP(f)
- B(g);N_GUARD::R1(H),XP(f)
- R(a);N_GUARD::R(B),XP(b)
- P(e);OGATEB,SBLOCK::R(H)
- Refutation
- P(e);XP(D)
- Try
- P(D);XP(e)
- Vars
- P(f);OGATE,XP(G)::R1(B),XP(f)
- B(g);N_GUARD::R1(H),XP(f)
- R(a);N_GUARD::R(B),XP(b)
- Refutation
- P(f);XP(D)
- Try
- P(G);XP(f)
- Threat
- DUALS(2)
- Vars
- B(g);N_GUARD::P=Q
- Refutation
- B(g);XP(G)
- Try
- Actual
- R(H);
- Vars
- P(e);XP(D)::B(J)
- P(f);OGATE,XP(G)::R1(B),XP(f)
- B(g);N_GUARD::R1(H),XP(f)
- R(a);N_GUARD::R(B),XP(b)
- P(e);::B(J),XP(e)
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