MESON Chess Problem Database
Problem Display
PID: 114830 (bK3n2/4Bn2/1N6/1Rppk2r/5RQ1/r1P5/5P2/8 w - - 0 1)
Andrade, Barry Jack da Costa
Andradiana, 1961
#2
8 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rh1
- 2.Qf5#
- 1...Rh2
- 2.Qf5#
- 1...Rh3
- 2.Qf5#
- 1...Rh4
- 2.Qf5#
- 1...Rf5
- 2.Qxf5#
- 1...Rh6
- 2.Qf5#
- 1...Rh7
- 2.Qf5#
- 1...Rh8
- 2.Qf5#
- 1...Sg5
- 2.Qf5#
- 1...Sd6
- 2.Bf6#
- 1...Se6
- 2.Sd7#
- 1...Sg6
- 2.Sd7#
- 1...Sd7+
- 2.Sxd7#
- 1...Sh7
- 2.Sd7#
- 1...c4
- 2.Sxc4#
- 2.Re4#
- 1...d4
- 2.cxd4#
- 1...Rh1
- Tries
- 1.Ra4?
- threat
- 2.f4#
- 1...Sd7+
- 2.Sxd7#
- 1...Rf5
- 2.Qe2#
- 1...Se6
- 2.Sd7#
- 1...Sg6
- 2.Sd7#
- 1...c4
- 2.Sxc4#
- 1...d4
- 2.cxd4#
- 1...Rxa4!
- threat
- 1.Rc4?
- threat
- 2.f4#
- 1...Sd7+
- 2.Sxd7#
- 1...Rf5
- 2.Qe2#
- 1...Se6
- 2.Sd7#
- 1...Sg6
- 2.Sd7#
- 1...d4
- 2.cxd4#
- 1...dxc4!
- threat
- 1.Rd4?
- threat
- 2.f4#
- 1...Sd7+
- 2.Sxd7#
- 1...cxd4
- 2.Sc4#
- 2.cxd4#
- 1...Rf5
- 2.Qe2#
- 1...Se6
- 2.Sd7#
- 1...Sg6
- 2.Sd7#
- 1...Rxc3!
- threat
- 1.Rf6?
- threat
- 2.Qe2#
- 2.Qf4#
- 1...Sd7+
- 2.Sxd7#
- 1...Rxc3
- 2.Qf4#
- 1...Ra2
- 2.Qf4#
- 1...Rh3
- 2.Qf5#
- 2.Qf4#
- 1...Rh4
- 2.Qf5#
- 1...Rf5
- 2.Qxf5#
- 1...Sg5
- 2.Qf5#
- 2.Qf4#
- 1...Sd6
- 2.Qf4#
- 1...Se6
- 2.Sd7#
- 2.Rxe6#
- 2.Qe2#
- 2.Qxe6#
- 1...Sg6
- 2.Sd7#
- 2.Re6#
- 2.Qe2#
- 2.Qe6#
- 1...d4
- 2.Qxd4#
- 2.Qf4#
- 2.cxd4#
- 1...Ra4!
- threat
- 1.Rxc5?
- threat
- 2.Sc4#
- 2.Re4#
- 1...Sd7+
- 2.Sxd7#
- 1...Rxc3
- 2.Re4#
- 1...Rf5
- 2.Re4#
- 2.Qxf5#
- 1...Rb3
- 2.Re4#
- 1...Sg5
- 2.Sc4#
- 2.Qf5#
- 1...Sd6
- 2.Bf6#
- 1...Ra4!
- threat
- 1.Qg7+?
- 1...Ke6
- 2.Qf6#
- 1...Kxf4!
- 1...Ke6
- 1.Ra4?
- Keys
- 1.Rfb4!
- threat
- 2.f4#
- 1...Sd7+
- 2.Sxd7#
- 1...cxb4
- 2.Sc4#
- 1...Rf5
- 2.Qe2#
- 1...Se6
- 2.Sd7#
- 1...Sg6
- 2.Sd7#
- 1...c4
- 2.Sxc4#
- 1...d4
- 2.cxd4#
- threat
- 1.Rfb4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 10
- Sets
- R(e);N_GUARD::QAR1(D)
- R(e);N_GUARD::QAR1(D),XR(e)
- S(f);S_CUTR(e)::QAR1(D)
- S(f);SBLOCK::B(G)
- S(h);N_GUARD::S(F)
- S(h);CHECK,N_GUARD::S(F),XS(h)
- P(c);OGATE,P_SPINP(b)::P(B),XP(c)
- Tries
- Try
- R(C);
- Threat
- P(A)
- Vars
- S(h);CHECK,N_GUARD::S(F),XS(h)
- R(e);SBLOCK::QAR(D)
- S(h);N_GUARD::S(F)
- P(b);P_SPINP(c)::S(F),XP(b)
- P(c);OGATE,P_SPINP(b)::P(B),XP(c)
- Refutation
- R(a);XR(C)
- Try
- R(C);
- Threat
- P(A)
- Vars
- S(h);CHECK,N_GUARD::S(F),XS(h)
- R(e);SBLOCK::QAR(D)
- S(h);N_GUARD::S(F)
- P(c);OGATE,P_SPINP(b)::P(B),XP(c)
- Refutation
- P(c);P_SPINP(b),XR(C)
- Try
- R(C);
- Threat
- P(A)
- Vars
- S(h);CHECK,N_GUARD::S(F),XS(h)
- R(e);SBLOCK::QAR(D)
- S(h);N_GUARD::S(F)
- Refutation
- R(a);XP(B)
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- S(h);CHECK,N_GUARD::S(F),XS(h)
- R(a);XP(B)::QAB1(D)
- R(a);::QAB1(D)
- R(e);N_GUARD::QAR1(D)
- R(e);N_GUARD::QAR1(D),XR(e)
- S(f);::QAB1(D)
- Refutation
- R(a);
- Try
- R(E);P_PINP(c),XP(b)
- Threat
- DUALS(2)
- Vars
- S(h);CHECK,N_GUARD::S(F),XS(h)
- R(a);XP(B)::R1(C)
- R(a);P_PINS(F)::R1(C)
- S(f);SBLOCK::B(G)
- Refutation
- R(a);
- Try
- Q(D);CHECK
- Vars
- K(d);P-FLIGHT::QAR1(D)
- Refutation
- K(d);S_FLIGHT,XR(C)
- Try
- Actual
- R(C);
- Threat
- P(A)
- Vars
- S(h);CHECK,N_GUARD::S(F),XS(h)
- P(b);P_SPINP(c),XR(C)::S(F)
- R(e);SBLOCK::QAR(D)
- S(h);N_GUARD::S(F)
- P(b);P_SPINP(c)::S(F),XP(b)
- P(c);OGATE,P_SPINP(b)::P(B),XP(c)
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