Meson Chess Problem Database

Martin, Ernst Otto

Neue Leipziger Zeitung, 1934

3 + 4

785	Het Belgisch Schaakbord (L'Echiquier Belge)	1952
2012	Miniature Chess Problems from Many Countries	1981

Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 5
Sets
- R(d);N_GUARD::QAR(B),XR(d)
- R(d);S_CUTB(c)::QAR(B)
- R(d);N_GUARD::QAR(B)
- B(c);S_CUTR(d)::QAR(B)
Tries
- Try
  - R(C);
  - Threat
    - R(C)
  - Vars
    - K(a);P-FLIGHT::R(C)
    - R(d);N_GUARD::QAR(B)
  - Refutation
    - K(a);P-FLIGHT
- Try
  - R(C);
  - Threat
    - R(C)
  - Vars
    - K(a);P-FLIGHT::R(C)
    - R(d);N_GUARD::QAR(B)
  - Refutation
    - B(c);XQ(B)
- Try
  - Q(B);
  - Threat
    - DUALS(2)
  - Vars
    - K(a);P-FLIGHT::QAR1(B)
    - R(d);::QAR2(B)
    - R(d);::QAR1(B)
  - Refutation
    - B(c);
- Try
  - Q(B);
  - Threat
    - QAR1(B)
  - Vars
    - B(c);::R(C)+K(A),XB(c)
  - Refutation
    - R(d);
- Try
  - Q(B);
  - Threat
    - DUALS(2)
  - Vars
    - B(c);::QAR2(B)
    - R(d);::QAR2(B)
    - R(d);::QAR1(B)
    - B(c);::QAR1(B)
  - Refutation
    - K(a);P-FLIGHT
- Try
  - Q(B);CHECK
  - Vars
    - K(a);P-FLIGHT::QAR1(B)
  - Refutation
    - K(a);P-FLIGHT
Actual
- R(C);
- Threat
  - DUALS(2)
- Vars
  - K(a);P-FLIGHT::QAR2(B)
  - R(d);XR(C)::QAR(B)
  - B(c);XR(C)::QAR(B)
  - R(d);::QAR(B)
  - R(d);N_GUARD,P_PINQ(B)::R(C)
  - P(b);::QAR(B)

MESON Chess Problem Database