MESON Chess Problem Database
Problem Display
PID: 89283 (n3b3/Q3Bp2/Rqk1nN2/3R4/b7/1p2p3/1P2Bp2/5K2 w - - 0 1)
Vaughan, Colin V
The Problemist, 1976
#2
8 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qxa6
- 2.Rd6#
- 1...Bb5
- 2.Bxb5#
- 1...Bd7
- 2.Qxd7#
- 1...Sd4
- 2.Rc5#
- 1...Sf4
- 2.Rc5#
- 1...Sc5
- 2.Rxc5#
- 2.Rd6#
- 1...Sg5
- 2.Rc5#
- 1...Sec7
- 2.Rc5#
- 1...Sg7
- 2.Rc5#
- 1...Sd8
- 2.Rc5#
- 1...Sf8
- 2.Rc5#
- 1...Sac7
- 2.Rxb6#
- 2.Qxb6#
- 1...Qxa6
- Tries
- 1.Sd7?
- threat
- 2.Rd6#
- 1...Bxd7
- 2.Qxd7#
- 1...Kxd5!
- threat
- 1.Bd3?
- 1...Qxa6
- 2.Rd6#
- 1...Bb5
- 2.Bxb5#
- 1...Bd7
- 2.Qxd7#
- 1...Sd4
- 2.Rc5#
- 1...Sf4
- 2.Rc5#
- 1...Sc5
- 2.Rxc5#
- 2.Rd6#
- 1...Sg5
- 2.Rc5#
- 1...Sec7
- 2.Rc5#
- 1...Sg7
- 2.Rc5#
- 1...Sd8
- 2.Rc5#
- 1...Sf8
- 2.Rc5#
- 1...Sac7
- 2.Rxb6#
- 2.Qxb6#
- 1...e2+!
- 1...Qxa6
- 1.Bc4?
- 1...Qxa6
- 2.Rd6#
- 1...Bb5
- 2.Bxb5#
- 1...Bd7
- 2.Qxd7#
- 1...Sd4
- 2.Rc5#
- 1...Sf4
- 2.Rc5#
- 1...Sc5
- 2.Rxc5#
- 2.Rd6#
- 1...Sg5
- 2.Rc5#
- 1...Sec7
- 2.Rc5#
- 1...Sg7
- 2.Rc5#
- 1...Sd8
- 2.Rc5#
- 1...Sf8
- 2.Rc5#
- 1...Sac7
- 2.Rxb6#
- 2.Qxb6#
- 1...e2+!
- 1...Qxa6
- 1.Bf8?
- 1...Qxa6
- 2.Rd6#
- 1...Bb5
- 2.Bxb5#
- 1...Bd7
- 2.Qxd7#
- 1...Sd4
- 2.Rc5#
- 1...Sf4
- 2.Rc5#
- 1...Sc5
- 2.Rxc5#
- 2.Rd6#
- 1...Sg5
- 2.Rc5#
- 1...Sec7
- 2.Rc5#
- 1...Sg7
- 2.Rc5#
- 1...Sd8
- 2.Rc5#
- 1...Sac7
- 2.Rxb6#
- 2.Qxb6#
- 1...Sxf8!
- 1...Qxa6
- 1.Rda5?
- threat
- 2.Bf3#
- 1...Bb5
- 2.Bxb5#
- 1...Sd4
- 2.Rc5#
- 1...Sf4
- 2.Rc5#
- 1...Sc5
- 2.Rxc5#
- 1...Sg5
- 2.Rc5#
- 1...Sec7
- 2.Rc5#
- 1...Sac7
- 2.Rxb6#
- 2.Qxb6#
- 1...Qxa6!
- threat
- 1.Re5?
- threat
- 2.Bf3#
- 1...Bb5
- 2.Bxb5#
- 1...Sd4
- 2.Rc5#
- 1...Sf4
- 2.Rc5#
- 1...Sc5
- 2.Rxc5#
- 1...Sg5
- 2.Rc5#
- 1...Sec7
- 2.Rc5#
- 1...Sac7
- 2.Rxb6#
- 2.Qxb6#
- 1...Qxa6!
- threat
- 1.Rf5?
- threat
- 2.Bf3#
- 1...Bb5
- 2.Bxb5#
- 1...Sd4
- 2.Rc5#
- 1...Sf4
- 2.Rc5#
- 1...Sc5
- 2.Rxc5#
- 1...Sg5
- 2.Rc5#
- 1...Sec7
- 2.Rc5#
- 1...Sac7
- 2.Rxb6#
- 2.Qxb6#
- 1...Qxa6!
- threat
- 1.Sd7?
- Keys
- 1.Rd3!
- 1...Kb5
- 2.Rc3#
- 1...Qxa6
- 2.Rd6#
- 1...Bb5
- 2.Bf3#
- 1...Bd7
- 2.Qxd7#
- 1...Sd4
- 2.Rc3#
- 1...Sf4
- 2.Rc3#
- 1...Sc5
- 2.Rd6#
- 1...Sg5
- 2.Rc3#
- 1...Sec7
- 2.Rc3#
- 1...Sg7
- 2.Rc3#
- 1...Sd8
- 2.Rc3#
- 1...Sf8
- 2.Rc3#
- 1...Sac7
- 2.Rxb6#
- 2.Qxb6#
- 1...Kb5
- 1.Rd3!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 8
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- Q(e);N_SPINQ(e),P_PINB(C),XR(E)::R1(D)
- B(d);N_GUARD,P_PINB(C)::B(C),XB(d)
- B(j);N_GUARD::QAB1(G),XB(j)
- S(g);N_GUARD::R1(D)
- Tries
- Try
- S(F);
- Threat
- R1(D)
- Vars
- B(j);OGATE,XS(F)::QAB1(G),XB(j)
- Refutation
- K(f);N_SPINQ(e),S_FLIGHT,XR(D)
- Try
- B(C);
- Vars
- Q(e);N_SPINQ(e),P_PINB(C),XR(E)::R1(D)
- B(d);N_GUARD,P_PINB(C)::B(C),XB(d)
- B(j);N_GUARD::QAB1(G),XB(j)
- S(g);N_GUARD::R1(D)
- Refutation
- P(c);CHECK
- Try
- B(C);
- Vars
- Q(e);N_SPINQ(e),P_PINB(C),XR(E)::R1(D)
- B(d);N_GUARD,P_PINB(C)::B(C),XB(d)
- B(j);N_GUARD::QAB1(G),XB(j)
- S(g);N_GUARD::R1(D)
- Refutation
- P(c);CHECK
- Try
- B(H);
- Vars
- Q(e);N_SPINQ(e),P_PINB(C),XR(E)::R1(D)
- B(d);N_GUARD,P_PINB(C)::B(C),XB(d)
- B(j);N_GUARD::QAB1(G),XB(j)
- S(g);N_GUARD::R1(D)
- Refutation
- S(g);XB(H)
- Try
- R(D);
- Threat
- B(C)
- Vars
- B(d);N_GUARD,P_PINB(C)::B(C),XB(d)
- S(g);N_GUARD::R1(D)
- S(g);N_GUARD::R1(D),XS(g)
- Refutation
- Q(e);N_SPINQ(e),P_PINB(C),XR(E)
- Try
- R(D);
- Threat
- B(C)
- Vars
- B(d);N_GUARD,P_PINB(C)::B(C),XB(d)
- S(g);N_GUARD::R1(D)
- S(g);N_GUARD::R1(D),XS(g)
- Refutation
- Q(e);N_SPINQ(e),P_PINB(C),XR(E)
- Try
- R(D);
- Threat
- B(C)
- Vars
- B(d);N_GUARD,P_PINB(C)::B(C),XB(d)
- S(g);N_GUARD::R1(D)
- S(g);N_GUARD::R1(D),XS(g)
- Refutation
- Q(e);N_SPINQ(e),P_PINB(C),XR(E)
- Try
- Actual
- R(D);
- Vars
- K(f);N_SPINQ(e),S_FLIGHT::B(C)+R(D)
- Q(e);N_SPINQ(e),XR(E)::R1(D)
- B(d);SBLOCK::B(C)
- B(j);N_GUARD::QAB1(G),XB(j)
- S(g);N_GUARD::R(D)
- S(g);SBLOCK::R1(D)
Developed and maintained by Brian Stephenson.
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