Meson Chess Problem Database

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Problem Display

PID: 17222 (8/6p1/6K1/5p2/6p1/6k1/4Q2R/3Nb3 w - - 0 1)

Harcz, Karoly

Magyar Sakkvilag, 1925

4 + 5

3310	2345 Chess Problems	1997

SOLUTION

SOUND
Sets
- 1...Kf4
  - 2.Qe3#
- 1...Bd2
  - 2.Qf2#
- 1...Bf2
  - 2.Qxf2#
- 1...Bc3
  - 2.Qf2#
- 1...Bb4
  - 2.Qf2#
- 1...Ba5
  - 2.Qf2#
- 1...f4
  - 2.Qg2#
Tries
- 1.Kxf5?
  - threat
    - 2.Qg2#
  - 1...Bf2
    - 2.Qxf2#
  - 1...g6+!
- 1.Kg5?
  - threat
    - 2.Qg2#
  - 1...Bf2
    - 2.Qxf2#
  - 1...Bd2+!
- 1.Kxg7?
  - 1...Kf4
    - 2.Qe3#
  - 1...Bf2
    - 2.Qxf2#
  - 1...Bd2
    - 2.Qf2#
  - 1...Bb4
    - 2.Qf2#
  - 1...Ba5
    - 2.Qf2#
  - 1...f4
    - 2.Qg2#
  - 1...Bc3+!
- 1.Sb2?
  - 1...Bf2
    - 2.Qxf2#
  - 1...Bd2
    - 2.Qf2#
  - 1...Bc3
    - 2.Qf2#
  - 1...Bb4
    - 2.Qf2#
  - 1...Ba5
    - 2.Qf2#
  - 1...f4
    - 2.Qg2#
  - 1...Kf4!
- 1.Sc3?
  - 1...Bxc3
    - 2.Qf2#
  - 1...Bf2
    - 2.Qxf2#
  - 1...Bd2
    - 2.Qf2#
  - 1...f4
    - 2.Se4#
    - 2.Qg2#
  - 1...Kf4!
- 1.Se3?
  - 1...Bf2
    - 2.Qxf2#
  - 1...Bd2
    - 2.Qf2#
  - 1...Bc3
    - 2.Qf2#
  - 1...Bb4
    - 2.Qf2#
  - 1...Ba5
    - 2.Qf2#
  - 1...f4
    - 2.Sf1#
    - 2.Sf5#
    - 2.Qg2#
  - 1...Kf4!
- 1.Rh1?
  - 1...Kf4
    - 2.Qe3#
  - 1...Bf2
    - 2.Qxf2#
  - 1...Bd2
    - 2.Qf2#
  - 1...Bc3
    - 2.Qf2#
  - 1...Bb4
    - 2.Qf2#
  - 1...Ba5
    - 2.Qf2#
  - 1...f4!
- 1.Rh5?
  - 1...Kf4
    - 2.Qe3#
  - 1...Bf2
    - 2.Qxf2#
  - 1...Bd2
    - 2.Qf2#
  - 1...Bc3
    - 2.Qf2#
  - 1...Bb4
    - 2.Qf2#
  - 1...Ba5
    - 2.Qf2#
  - 1...f4!
- 1.Rh7?
  - 1...Kf4
    - 2.Qe3#
  - 1...Bf2
    - 2.Qxf2#
  - 1...Bd2
    - 2.Qf2#
  - 1...Bc3
    - 2.Qf2#
  - 1...Bb4
    - 2.Qf2#
  - 1...Ba5
    - 2.Qf2#
  - 1...f4!
- 1.Rh8?
  - 1...Kf4
    - 2.Qe3#
  - 1...Bf2
    - 2.Qxf2#
  - 1...Bd2
    - 2.Qf2#
  - 1...Bc3
    - 2.Qf2#
  - 1...Bb4
    - 2.Qf2#
  - 1...Ba5
    - 2.Qf2#
  - 1...f4!
- 1.Qf1?
  - 1...Bf2
    - 2.Qxf2#
  - 1...f4
    - 2.Qg2#
  - 1...Bd2
    - 2.Qf2#
  - 1...Bc3
    - 2.Qf2#
  - 1...Bb4
    - 2.Qf2#
  - 1...Ba5
    - 2.Qf2#
  - 1...Kxh2!
- 1.Qd3+?
  - 1...Kf4
    - 2.Qe3#
  - 1...Kxh2!
- 1.Qxe1+?
  - 1...Kf3
    - 2.Qe3#
  - 1...Kf4
    - 2.Qe3#
  - 1...Kxh2!
- 1.Qd2?
  - 1...Kf3
    - 2.Qe3#
  - 1...Bf2
    - 2.Qxf2#
  - 1...f4
    - 2.Qg2#
  - 1...Bxd2!
- 1.Qe5+?
  - 1...Kf3
    - 2.Qe3#
  - 1...f4!
Keys
- 1.Rh4!
  - 1...Kf4
    - 2.Qe3#
  - 1...Kxh4
    - 2.Qh2#
  - 1...Bf2
    - 2.Qxf2#
  - 1...Bd2
    - 2.Qf2#
  - 1...Bc3
    - 2.Qf2#
  - 1...Bb4
    - 2.Qf2#
  - 1...Ba5
    - 2.Qf2#
  - 1...f4
    - 2.Qxg4#

FEATURES

Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 0
Sets
- K(b);S_FLIGHT::QAB1(B)
- B(a);N_GUARD::QAB1(B)
- B(a);N_GUARD::QAB1(B),XB(a)
- P(d);SBLOCK::QAR1(B)
Tries
- Try
  - K(D);S_FLIGHT,XP(d)
  - Threat
    - QAR1(B)
  - Vars
    - B(a);N_GUARD::QAB1(B),XB(a)
  - Refutation
    - P(e);CHECK
- Try
  - K(D);P-FLIGHT
  - Threat
    - QAR1(B)
  - Vars
    - B(a);N_GUARD::QAB1(B),XB(a)
  - Refutation
    - B(a);CHECK
- Try
  - K(D);P-FLIGHT,XP(e)
  - Vars
    - K(b);S_FLIGHT::QAB1(B)
    - B(a);N_GUARD::QAB1(B),XB(a)
    - B(a);N_GUARD::QAB1(B)
    - P(d);SBLOCK::QAR1(B)
  - Refutation
    - B(a);CHECK
- Try
  - S(A);
  - Vars
    - B(a);N_GUARD::QAB1(B),XB(a)
    - B(a);N_GUARD::QAB1(B)
    - P(d);SBLOCK::QAR1(B)
  - Refutation
    - K(b);S_FLIGHT
- Try
  - S(A);
  - Vars
    - B(a);N_GUARD,XS(A)::QAB1(B)
    - B(a);N_GUARD::QAB1(B),XB(a)
    - B(a);N_GUARD::QAB1(B)
  - Refutation
    - K(b);S_FLIGHT
- Try
  - S(A);
  - Vars
    - B(a);N_GUARD::QAB1(B),XB(a)
    - B(a);N_GUARD::QAB1(B)
  - Refutation
    - K(b);S_FLIGHT
- Try
  - R(C);
  - Vars
    - K(b);S_FLIGHT::QAB1(B)
    - B(a);N_GUARD::QAB1(B),XB(a)
    - B(a);N_GUARD::QAB1(B)
  - Refutation
    - P(d);
- Try
  - R(C);
  - Vars
    - K(b);S_FLIGHT::QAB1(B)
    - B(a);N_GUARD::QAB1(B),XB(a)
    - B(a);N_GUARD::QAB1(B)
  - Refutation
    - P(d);
- Try
  - R(C);
  - Vars
    - K(b);S_FLIGHT::QAB1(B)
    - B(a);N_GUARD::QAB1(B),XB(a)
    - B(a);N_GUARD::QAB1(B)
  - Refutation
    - P(d);
- Try
  - R(C);
  - Vars
    - K(b);S_FLIGHT::QAB1(B)
    - B(a);N_GUARD::QAB1(B),XB(a)
    - B(a);N_GUARD::QAB1(B)
  - Refutation
    - P(d);
- Try
  - Q(B);
  - Vars
    - B(a);N_GUARD::QAB1(B),XB(a)
    - P(d);SBLOCK::QAR1(B)
    - B(a);N_GUARD::QAB1(B)
  - Refutation
    - K(b);S_FLIGHT,XR(C)
- Try
  - Q(B);CHECK
  - Vars
    - K(b);S_FLIGHT::QAB1(B)
  - Refutation
    - K(b);S_FLIGHT,XR(C)
- Try
  - Q(B);CHECK,XB(a)
  - Vars
    - K(b);P-FLIGHT::QAR1(B)
    - K(b);S_FLIGHT::QAB1(B)
  - Refutation
    - K(b);S_FLIGHT,XR(C)
- Try
  - Q(B);
  - Vars
    - K(b);P-FLIGHT::QAR1(B)
    - B(a);N_GUARD::QAB1(B),XB(a)
    - P(d);SBLOCK::QAR1(B)
  - Refutation
    - B(a);XQ(B)
- Try
  - Q(B);CHECK
  - Vars
    - K(b);P-FLIGHT::QAR1(B)
  - Refutation
    - P(d);P_SPINP(d)
Actual
- R(C);
- Vars
  - K(b);P_SPINP(c),S_FLIGHT::QAB1(B)
  - K(b);S_FLIGHT,XR(C)::QAR2(B)
  - B(a);N_GUARD::QAB1(B),XB(a)
  - B(a);N_GUARD::QAB1(B)
  - P(d);N_GUARD::QAR1(B),XP(c)

MESON Chess Problem Database

Problem Display

PID: 17222 (8/6p1/6K1/5p2/6p1/6k1/4Q2R/3Nb3 w - - 0 1)

SOLUTION

FEATURES