MESON Chess Problem Database
Problem Display
PID: 77868 (3R4/8/8/5N2/5p2/8/3pk1p1/Q3BbK1 w - - 0 1)
Buchner, Rudolf
Saxon Chess Federation, 1927
#2
5 + 5
| 3310 | 2345 Chess Problems | 1997 |
| 3713 | Snap | 2018 |
SOLUTION
- SOUND
- Sets
- 1...dxe1S
- 2.Qd1#
- 1...dxe1B
- 2.Qd1#
- 1...d1Q
- 2.Qxd1#
- 1...d1S
- 2.Qxd1#
- 1...d1B
- 2.Qxd1#
- 1...d1R
- 2.Qxd1#
- 1...f3
- 2.Rxd2#
- 1...dxe1S
- Tries
- 1.Bxd2?
- 1...f3
- 2.Sg3#
- 2.Qe1#
- 1...Kf3!
- 1...f3
- 1.Bf2?
- 1...d1Q
- 2.Qxd1#
- 1...d1S
- 2.Qxd1#
- 1...d1B
- 2.Qxd1#
- 1...d1R
- 2.Qxd1#
- 1...f3
- 2.Sg3#
- 1...Kf3!
- 1...d1Q
- 1.Qb2?
- 1...Kd1
- 2.Qxd2#
- 1...Kxe1
- 2.Qxd2#
- 1...f3
- 2.Qxd2#
- 1...Kf3!
- 1...Kd1
- 1.Qd4?
- 1...Kd1
- 2.Qxd2#
- 1...Kxe1
- 2.Qxd2#
- 1...dxe1Q
- 2.Qd3#
- 2.Qe4#
- 1...dxe1S
- 2.Qf2#
- 2.Qd1#
- 2.Qe4#
- 1...dxe1B
- 2.Qd1#
- 2.Qd3#
- 2.Qe4#
- 1...dxe1R
- 2.Qf2#
- 2.Qd3#
- 2.Qe4#
- 1...d1Q
- 2.Qf2#
- 2.Qxd1#
- 2.Qe4#
- 1...d1S
- 2.Qxd1#
- 1...d1B
- 2.Qf2#
- 2.Qxd1#
- 2.Qe4#
- 1...d1R
- 2.Qf2#
- 2.Qxd1#
- 2.Qe4#
- 1...f3
- 2.Qxd2#
- 1...Kf3!
- 1...Kd1
- 1.Qb1?
- 1...dxe1Q
- 2.Qd3#
- 2.Qe4#
- 1...dxe1S
- 2.Qe4#
- 2.Qd1#
- 1...dxe1B
- 2.Qd3#
- 2.Qe4#
- 2.Qd1#
- 1...dxe1R
- 2.Qd3#
- 2.Qe4#
- 1...d1Q
- 2.Qe4#
- 2.Qxd1#
- 1...d1S
- 2.Qxd1#
- 1...d1B
- 2.Qe4#
- 2.Qxd1#
- 1...d1R
- 2.Qe4#
- 2.Qxd1#
- 1...f3
- 2.Rxd2#
- 2.Re8#
- 1...Kf3!
- 1...dxe1Q
- 1.Qa2?
- 1...Kd1
- 2.Qxd2#
- 1...Kxe1
- 2.Qxd2#
- 1...f3
- 2.Qxd2#
- 1...Kf3!
- 1...Kd1
- 1.Bxd2?
- Keys
- 1.Qc3!
- 1...Kd1
- 2.Qxd2#
- 1...Kxe1
- 2.Qxd2#
- 1...dxe1Q
- 2.Qd3#
- 1...dxe1S
- 2.Rd2#
- 1...dxe1B
- 2.Qd3#
- 1...dxe1R
- 2.Rd2#
- 2.Qd3#
- 1...d1Q
- 2.Re8#
- 1...d1S
- 2.Sd4#
- 1...d1B
- 2.Sd4#
- 2.Re8#
- 1...d1R
- 2.Re8#
- 1...f3
- 2.Qxd2#
- 1...Kd1
- 1.Qc3!
This anticipates 173968(1933)
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 6
- ADDED MATES = 3
- REMOVED MATES = 1
- Sets
- P(b);XB(B)::QAB1(A)
- P(b);::QAB1(A),XQ(b)
- P(b);::QAB1(A),XS(b)
- P(b);::QAB1(A),XB(b)
- P(b);::QAB1(A),XR(b)
- P(e);SBLOCK::R1(E),XP(b)
- Tries
- Try
- B(B);XP(b)
- Refutation
- K(c);S_FLIGHT
- Try
- B(B);
- Vars
- P(b);::QAB1(A),XQ(b)
- P(b);::QAB1(A),XS(b)
- P(b);::QAB1(A),XB(b)
- P(b);::QAB1(A),XR(b)
- P(e);N_GUARD,SBLOCK::S(D)
- Refutation
- K(c);S_FLIGHT
- Try
- Q(A);P_PINP(b)
- Vars
- K(c);S_FLIGHT::QAR1(A),XP(b)
- K(c);N_SPINP(b),P-FLIGHT,XB(B)::QAB1(A),XP(b)
- P(e);SBLOCK::QAR1(A),XP(b)
- Refutation
- K(c);N_SPINP(b),S_FLIGHT
- Try
- Q(A);
- Vars
- K(c);P_SPINP(b),S_FLIGHT::QAR1(A),XP(b)
- K(c);P-FLIGHT,XB(B)::QAB1(A),XP(b)
- P(b);OGATE::QAB1(A),XS(b)
- P(e);SBLOCK::QAR1(A),XP(b)
- Refutation
- K(c);S_FLIGHT
- Try
- Q(A);
- Vars
- P(b);::QAB1(A),XS(b)
- Refutation
- K(c);S_FLIGHT
- Try
- Q(A);P_PINP(b)
- Vars
- K(c);S_FLIGHT::QAR1(A),XP(b)
- K(c);N_SPINP(b),P-FLIGHT,XB(B)::QAB1(A),XP(b)
- P(e);SBLOCK::QAR1(A),XP(b)
- Refutation
- K(c);N_SPINP(b),S_FLIGHT
- Try
- Actual
- Q(A);
- Vars
- K(c);P_SPINP(b),S_FLIGHT::QAR1(A),XP(b)
- K(c);P-FLIGHT,P_SPINP(b),XB(B)::QAB1(A),XP(b)
- P(b);SBLOCK,XB(B)::QAB1(A)
- P(b);SBLOCK,XB(B)::R1(E)
- P(b);SBLOCK::R(E)
- P(b);SBLOCK::S(D)
- P(e);SBLOCK::QAR1(A),XP(b)
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