MESON Chess Problem Database
Problem Display
PID: 114825 (4Rbq1/4p1p1/1n1Nn1R1/4k3/1Q1pPr2/1N1P3p/1p5B/1K6 w - - 0 1)
Andrade, Barry Jack da Costa
The Field, 1958
(First published on Thu Jan 30 1958)
#2
9 + 11
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qf7
- 2.Sxf7#
- 1...Qh7
- 2.Sf7#
- 1...Qh8
- 2.Sf7#
- 1...Sa4
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Sd5
- 2.Sc4#
- 1...Sd7
- 2.Sc4#
- 1...Sa8
- 2.Sc4#
- 1...Sc8
- 2.Sc4#
- 1...Sc5
- 2.Qxd4#
- 1...Sg5
- 2.Qxd4#
- 1...Sc7
- 2.Qxd4#
- 1...Sd8
- 2.Qxd4#
- 1...exd6
- 2.Qxd4#
- 1...Qf7
- Tries
- 1.Kxb2?
- 1...Sc4+
- 2.Sxc4#
- 1...exd6
- 2.Qxd4#
- 1...Qf7
- 2.Sxf7#
- 1...Qh7
- 2.Sf7#
- 1...Qh8
- 2.Sf7#
- 1...Sd5
- 2.Sc4#
- 1...Sd7
- 2.Sc4#
- 1...Sa8
- 2.Sc4#
- 1...Sc8
- 2.Sc4#
- 1...Sc5
- 2.Qxd4#
- 1...Sg5
- 2.Qxd4#
- 1...Sc7
- 2.Qxd4#
- 1...Sd8
- 2.Qxd4#
- 1...Sa4+!
- 1...Sc4+
- 1.Sxd4?
- threat
- 2.Sf3#
- 2.Sc6#
- 1...Sg5
- 2.Sc6#
- 1...Sd8
- 2.Sf3#
- 1...Sxd4!
- threat
- 1.Bg3?
- 1...exd6
- 2.Qxd4#
- 1...Qf7
- 2.Sxf7#
- 1...Qh7
- 2.Sf7#
- 1...Qh8
- 2.Sf7#
- 1...Sa4
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Sd5
- 2.Sc4#
- 1...Sd7
- 2.Sc4#
- 1...Sa8
- 2.Sc4#
- 1...Sc8
- 2.Sc4#
- 1...Sc5
- 2.Qxd4#
- 1...Sg5
- 2.Qxd4#
- 1...Sc7
- 2.Qxd4#
- 1...Sd8
- 2.Qxd4#
- 1...h2!
- 1...exd6
- 1.Bxf4+?
- 1...Sxf4
- 2.Qxd4#
- 1...Kxf4!
- 1...Sxf4
- 1.Rxe6+?
- 1...Qxe6
- 2.Qxd4#
- 1...Kxe6!
- 1...Qxe6
- 1.Rxe7?
- threat
- 2.Qxd4#
- 1...Sc4
- 2.Sxc4#
- 2.Qc5#
- 1...Sd5
- 2.Sc4#
- 1...Bxe7!
- threat
- 1.Ra8?
- 1...Sxa8
- 2.Sc4#
- 1...Qf7
- 2.Sxf7#
- 1...Qh7
- 2.Sf7#
- 1...Qh8
- 2.Sf7#
- 1...Sa4
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Sd5
- 2.Sc4#
- 1...Sd7
- 2.Sc4#
- 1...Sc8
- 2.Sc4#
- 1...Sc5
- 2.Qxd4#
- 1...Sg5
- 2.Qxd4#
- 1...Sc7
- 2.Qxd4#
- 1...Sd8
- 2.Qxd4#
- 1...exd6!
- 1...Sxa8
- 1.Rb8?
- 1...Qf7
- 2.Sxf7#
- 1...Qh7
- 2.Sf7#
- 1...Qh8
- 2.Sf7#
- 1...Sa4
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Sd5
- 2.Sc4#
- 1...Sd7
- 2.Sc4#
- 1...Sa8
- 2.Sc4#
- 1...Sc8
- 2.Sc4#
- 1...Sc5
- 2.Qxd4#
- 1...Sg5
- 2.Qxd4#
- 1...Sc7
- 2.Qxd4#
- 1...Sd8
- 2.Qxd4#
- 1...exd6!
- 1...Qf7
- 1.Rc8?
- 1...Sxc8
- 2.Sc4#
- 1...Qf7
- 2.Sxf7#
- 1...Qh7
- 2.Sf7#
- 1...Qh8
- 2.Sf7#
- 1...Sa4
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Sd5
- 2.Sc4#
- 1...Sd7
- 2.Sc4#
- 1...Sa8
- 2.Sc4#
- 1...Sc5
- 2.Qxd4#
- 1...Sg5
- 2.Qxd4#
- 1...Sc7
- 2.Qxd4#
- 1...Sd8
- 2.Qxd4#
- 1...exd6!
- 1...Sxc8
- 1.Rd8?
- 1...Sxd8
- 2.Qxd4#
- 1...Qf7
- 2.Sxf7#
- 1...Qh7
- 2.Sf7#
- 1...Qh8
- 2.Sf7#
- 1...Sa4
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Sd5
- 2.Sc4#
- 1...Sd7
- 2.Sc4#
- 1...Sa8
- 2.Sc4#
- 1...Sc8
- 2.Sc4#
- 1...Sc5
- 2.Qxd4#
- 1...Sg5
- 2.Qxd4#
- 1...Sc7
- 2.Qxd4#
- 1...exd6!
- 1...Sxd8
- 1.Rxf8?
- threat
- 2.Rf5#
- 1...Sxf8
- 2.Qxd4#
- 1...Qf7
- 2.Sxf7#
- 1...Qxf8!
- threat
- 1.Qd2?
- 1...exd6
- 2.Bxf4#
- 2.Qxf4#
- 1...Qf7
- 2.Sxf7#
- 1...Qh7
- 2.Sf7#
- 1...Qh8
- 2.Sf7#
- 1...Sa4
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Sd5
- 2.Sc4#
- 1...Sd7
- 2.Sc4#
- 1...Sa8
- 2.Sc4#
- 1...Sc8
- 2.Sc4#
- 1...Sc5
- 2.Bxf4#
- 2.Qxf4#
- 1...Sg5
- 2.Bxf4#
- 2.Qxf4#
- 1...Sc7
- 2.Bxf4#
- 2.Qxf4#
- 1...Sd8
- 2.Bxf4#
- 2.Qxf4#
- 1...Kxd6!
- 1...exd6
- 1.Qc5+?
- 1...Sd5
- 2.Sc4#
- 2.Qxd5#
- 1...Sxc5!
- 1...Sd5
- 1.Qc4?
- 1...Sxc4
- 2.Sxc4#
- 1...exd6
- 2.Qxd4#
- 1...Qf7
- 2.Sxf7#
- 1...Qh7
- 2.Sf7#
- 2.Rxe6#
- 2.Qxe6#
- 1...Qh8
- 2.Sf7#
- 2.Rxe6#
- 2.Qxe6#
- 1...Sa4
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sd7
- 2.Qd5#
- 1...Sa8
- 2.Qd5#
- 1...Sc8
- 2.Qd5#
- 1...Sc5
- 2.Qxd4#
- 1...Sg5
- 2.Qxd4#
- 1...Sc7
- 2.Qxd4#
- 1...Sd8
- 2.Qxd4#
- 1...Kxd6!
- 1...Sxc4
- 1.Qb5+?
- 1...Kxd6
- 2.Bxf4#
- 1...Sd5
- 2.Sc4#
- 2.Qxd5#
- 1...Sc5!
- 1...Kxd6
- 1.Qxb6?
- threat
- 2.Sc4#
- 1...exd6
- 2.Qxd4#
- 1...Sg5
- 2.Qxd4#
- 1...Sc7
- 2.Qxd4#
- 1...Sd8
- 2.Qxd4#
- 1...Sc5!
- threat
- 1.Kxb2?
- Keys
- 1.Qa4!
- 1...Kxd6
- 2.Bxf4#
- 1...Sxa4
- 2.Sc4#
- 1...exd6
- 2.Qxd4#
- 1...Qf7
- 2.Sxf7#
- 1...Qh7
- 2.Sf7#
- 1...Qh8
- 2.Sf7#
- 1...Sc4
- 2.Sxc4#
- 1...Sd5
- 2.Sc4#
- 1...Sd7
- 2.Sc4#
- 1...Sa8
- 2.Sc4#
- 1...Sc8
- 2.Sc4#
- 1...Sc5
- 2.Qxd4#
- 1...Sg5
- 2.Qxd4#
- 1...Sc7
- 2.Qxd4#
- 1...Sd8
- 2.Qxd4#
- 1...Kxd6
- 1.Qa4!
This is a version of 87421
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- Q(k);N_GUARD::S(G),XQ(k)
- Q(k);N_GUARD::S(G)
- S(f);N_GUARD::S(G)
- S(f);N_GUARD::S(G),XS(f)
- S(g);N_GUARD,P_SPINP(h)::QAB1(E),XP(c)
- P(h);P_SPINS(g),XS(G)::QAB1(E),XP(c)
- Tries
- Try
- K(A);P-FLIGHT,XP(a)
- Vars
- S(f);CHECK,N_GUARD::S(G),XS(f)
- P(h);P_SPINS(g),XS(G)::QAB1(E),XP(c)
- Q(k);N_GUARD::S(G),XQ(k)
- Q(k);N_GUARD::S(G)
- S(f);N_GUARD::S(G)
- S(g);N_GUARD,P_SPINP(h)::QAB1(E),XP(c)
- Refutation
- S(f);CHECK
- Try
- S(C);XP(c)
- Threat
- DUALS(2)
- Vars
- S(g);P_SPINP(h)::S(C)
- Refutation
- S(g);P_SPINP(h),XS(C)
- Try
- B(B);
- Vars
- P(h);P_SPINS(g),XS(G)::QAB1(E),XP(c)
- Q(k);N_GUARD::S(G),XQ(k)
- Q(k);N_GUARD::S(G)
- S(f);N_GUARD::S(G)
- S(f);N_GUARD::S(G),XS(f)
- S(g);N_GUARD,P_SPINP(h)::QAB1(E),XP(c)
- Refutation
- P(b);
- Try
- B(B);CHECK,XR(d)
- Vars
- S(g);P_SPINP(h),SBLOCK,XB(B)::QAB1(E),XP(c)
- Refutation
- K(e);S_FLIGHT,XB(B)
- Try
- R(H);CHECK,XS(g)
- Vars
- Q(k);SBLOCK,XR(H)::QAB1(E),XP(c)
- Refutation
- K(e);N_SPINR(d),P-FLIGHT,P_SPINP(h),XR(H)
- Try
- R(I);P_PINS(g),XP(h)
- Threat
- QAB1(E),XP(c)
- Vars
- S(f);N_GUARD::S(G)
- Refutation
- B(j);N_SPINS(g),XR(I)
- Try
- R(I);
- Vars
- S(f);N_GUARD,XR(I)::S(G)
- Q(k);N_GUARD::S(G),XQ(k)
- Q(k);N_GUARD::S(G)
- S(f);N_GUARD::S(G)
- S(f);N_GUARD::S(G),XS(f)
- S(g);N_GUARD::QAB1(E),XP(c)
- Refutation
- P(h);XS(G)
- Try
- R(I);
- Vars
- Q(k);N_GUARD::S(G),XQ(k)
- Q(k);N_GUARD::S(G)
- S(f);N_GUARD::S(G)
- S(f);N_GUARD::S(G),XS(f)
- S(g);N_GUARD::QAB1(E),XP(c)
- Refutation
- P(h);XS(G)
- Try
- R(I);
- Vars
- S(f);N_GUARD,XR(I)::S(G)
- Q(k);N_GUARD::S(G),XQ(k)
- Q(k);N_GUARD::S(G)
- S(f);N_GUARD::S(G)
- S(f);N_GUARD::S(G),XS(f)
- S(g);N_GUARD::QAB1(E),XP(c)
- Refutation
- P(h);XS(G)
- Try
- R(I);
- Vars
- S(g);N_GUARD,XR(I)::QAB1(E),XP(c)
- Q(k);N_GUARD::S(G),XQ(k)
- Q(k);N_GUARD::S(G)
- S(f);N_GUARD::S(G)
- S(f);N_GUARD::S(G),XS(f)
- S(g);N_GUARD::QAB1(E),XP(c)
- Refutation
- P(h);XS(G)
- Try
- R(I);XB(j)
- Threat
- R1(I)
- Vars
- S(g);N_GUARD,XR(I)::QAB1(E),XP(c)
- Q(k);N_GUARD::S(G),XQ(k)
- Refutation
- Q(k);XR(I)
- Try
- Q(E);
- Vars
- Q(k);N_GUARD::S(G),XQ(k)
- Q(k);N_GUARD::S(G)
- S(f);N_GUARD::S(G)
- S(f);N_GUARD::S(G),XS(f)
- Refutation
- K(e);P_SPINS(g),S_FLIGHT,XS(G)
- Try
- Q(E);CHECK
- Refutation
- S(g);P_SPINP(h),XQ(E)
- Try
- Q(E);
- Vars
- S(f);XQ(E)::S(G),XS(f)
- P(h);P_SPINS(g),XS(G)::QAB1(E),XP(c)
- Q(k);N_GUARD::S(G),XQ(k)
- S(f);N_GUARD::QAR1(E)
- S(f);N_GUARD::QAR1(E),XS(f)
- S(g);N_GUARD,P_SPINP(h)::QAB1(E),XP(c)
- Refutation
- K(e);P_SPINS(g),S_FLIGHT,XS(G)
- Try
- Q(E);CHECK
- Vars
- K(e);P_SPINS(g),S_FLIGHT,XS(G)::B(B),XR(d)
- Refutation
- S(g);P_SPINP(h),P_SPINS(g)
- Try
- Q(E);XS(f)
- Threat
- S(G)
- Vars
- P(h);P_SPINS(g),XS(G)::QAB1(E),XP(c)
- S(g);N_GUARD,P_SPINP(h)::QAB1(E),XP(c)
- Refutation
- S(g);P_SPINP(h)
- Try
- Actual
- Q(E);
- Vars
- K(e);P_SPINS(g),S_FLIGHT,XS(G)::B(B),XR(d)
- S(f);N_GUARD,XQ(E)::S(G)
- P(h);P_SPINS(g),XS(G)::QAB1(E),XP(c)
- Q(k);N_GUARD::S(G),XQ(k)
- Q(k);N_GUARD::S(G)
- S(f);N_GUARD::S(G),XS(f)
- S(f);N_GUARD::S(G)
- S(g);N_GUARD,P_SPINP(h)::QAB1(E),XP(c)
Developed and maintained by Brian Stephenson.
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