MESON Chess Problem Database

Problem Display
PID: 184061 (3R4/2p2B2/brp4p/2Nq2pP/N2k4/P2p2Q1/1rR4K/B7 w - - 0 1)

Schurr, Martial

1st Prize, Union des Problemistes de France (UPF), 1943

3R4/2p2B2/brp4p/2Nq2pP/N2k4/P2p2Q1/1rR4K/B7

#2

10 + 10

78 Bulletin Ouvrier des Echecs 1955

SOLUTION

  • SOUND
  • Sets
    • 1...Qd7
      • 2.Rxd7#
    • 1...Bb5
      • 2.Bxb2#
    • 1...dxc2
      • 2.Qc3#
    • 1...d2
      • 2.Qc3#
    • 1...g4
      • 2.Qf4#
  • Tries
    • 1.Qe1?
      • threat
        • 2.Se6#
        • 2.Qe4#
      • 1...Qxd8
        • 2.Qe4#
      • 1...dxc2
        • 2.Qc3#
        • 2.Qe4#
      • 1...Qd7
        • 2.Rxd7#
        • 2.Qe4#
      • 1...Bc8
        • 2.Qe4#
      • 1...d2
        • 2.Qe4#
      • 1...Qd6+!
  • Keys
    • 1.Re2!
      • threat
        • 2.Qg4#
      • 1...Kc4
        • 2.Qxd3#
      • 1...dxe2
        • 2.Qc3#
      • 1...Qd6
        • 2.Qe5#
      • 1...Bc8
        • 2.Qxd3#
      • 1...g4
        • 2.Qf4#
        • 2.Qxg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • Q(d);OGATEB::R(J),XQ(d)
    • B(f);S_CUTR(g)::B(A),XR(a)
    • P(b);OGATE,XR(B)::QAB1(E)
    • P(b);N_PINR(B),OGATE::QAB1(E)
    • P(e);N_GUARD::QAR2(E)
  • Tries
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • Q(d);N_SPINQ(d),XR(J)::QAR1(E)
        • B(f);::QAR1(E)
        • P(b);N_PINR(B)::QAR1(E)
      • Refutation
        • Q(d);CHECK
  • Actual
    • R(B);
    • Threat
      • QAR(E)
    • Vars
      • K(c);N_SPINR(a),P-FLIGHT,S_CUTB(f)::QAB1(E),XP(b)
      • P(b);OGATE,XR(B)::QAB1(E)
      • Q(d);P_PINQ(E)::QAB1(E)
      • B(f);N_GUARD::QAR1(E),XP(b)
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