MESON Chess Problem Database

Problem Display
PID: 70680 (1K2R1Bk/5Rp1/3NP3/7q/8/8/4b3/7Q w - - 0 1)

Oudot, Jean

British Chess Magazine, 1963

1K2R1Bk/5Rp1/3NP3/7q/8/8/4b3/7Q

#2

7 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Qh7
      • 2.Bxh7#
      • 2.Qxh7#
    • 1...Bf1
      • 2.Qxh5#
    • 1...Bc4
      • 2.Qxh5#
    • 1...Bb5
      • 2.Qxh5#
    • 1...Ba6
      • 2.Qxh5#
    • 1...g5
      • 2.Bh7#
      • 2.Qa1#
    • 1...g6
      • 2.Bh7#
  • Tries
    • 1.Rf3?
      • threat
        • 2.Sf7#
        • 2.Qxh5#
      • 1...Qxh1
        • 2.Sf7#
      • 1...Bxf3
        • 2.Sf7#
      • 1...g5
        • 2.Qa1#
      • 1...Qh2
        • 2.Qxh2#
      • 1...Qh3
        • 2.Sf7#
        • 2.Qxh3#
      • 1...Qh4
        • 2.Sf7#
        • 2.Qxh4#
      • 1...Qh6
        • 2.Sf7#
      • 1...Qh7
        • 2.Sf7#
        • 2.Bf7#
        • 2.Bxh7#
        • 2.Qxh7#
      • 1...Bd3
        • 2.Sf7#
      • 1...g6!
    • 1.Rf4?
      • threat
        • 2.Sf7#
      • 1...g5
        • 2.Qa1#
      • 1...g6!
    • 1.Rf5?
      • threat
        • 2.Sf7#
      • 1...g5
        • 2.Qa1#
      • 1...g6
        • 2.Qa1#
      • 1...Qh2!
    • 1.Ra7?
      • threat
        • 2.Sf7#
      • 1...g5
        • 2.Qa1#
      • 1...g6
        • 2.Bh7#
      • 1...Qh2!
    • 1.Rb7?
      • threat
        • 2.Sf7#
      • 1...g5
        • 2.Qa1#
      • 1...g6
        • 2.Bh7#
      • 1...Qh2!
    • 1.Rd7?
      • threat
        • 2.Sf7#
      • 1...g5
        • 2.Qa1#
      • 1...g6
        • 2.Bh7#
      • 1...Qh2!
    • 1.Rfe7?
      • threat
        • 2.Sf7#
      • 1...g5
        • 2.Qa1#
      • 1...g6
        • 2.Bh7#
      • 1...Qh2!
  • Keys
    • 1.Rc7!
      • threat
        • 2.Sf7#
      • 1...g5
        • 2.Qa1#
      • 1...g6
        • 2.Bh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • B(a);N_GUARD::QAR(A),XQ(b)
    • P(c);::R(F)+B(G)
  • Tries
    • Try
      • R(D);
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);N_SPINQ(b),XQ(A)::S(B)
        • B(a);XR(D)::S(B)
        • P(c);OGATEB::QAB(A)
        • Q(b);OGATEB,P_PINS(B)::QAR(A),XQ(b)
        • Q(b);::S(B)
        • B(a);::S(B)
      • Refutation
        • P(c);
    • Try
      • R(D);
      • Threat
        • S(B)
      • Vars
        • P(c);OGATEB::QAB(A)
      • Refutation
        • P(c);
    • Try
      • R(D);
      • Threat
        • S(B)
      • Vars
        • P(c);OGATEB::QAB(A)
      • Refutation
        • Q(b);P_PINS(B)
    • Try
      • R(D);
      • Threat
        • S(B)
      • Vars
        • P(c);OGATEB::QAB(A)
        • P(c);::R(F)+B(G)
      • Refutation
        • Q(b);P_PINS(B)
    • Try
      • R(D);
      • Threat
        • S(B)
      • Vars
        • P(c);OGATEB::QAB(A)
        • P(c);::R(F)+B(G)
      • Refutation
        • Q(b);P_PINS(B)
    • Try
      • R(D);
      • Threat
        • S(B)
      • Vars
        • P(c);OGATEB::QAB(A)
        • P(c);::R(F)+B(G)
      • Refutation
        • Q(b);P_PINS(B)
    • Try
      • R(D);
      • Threat
        • S(B)
      • Vars
        • P(c);OGATEB::QAB(A)
        • P(c);::R(F)+B(G)
      • Refutation
        • Q(b);P_PINS(B)
  • Actual
    • R(D);
    • Threat
      • S(B)
    • Vars
      • P(c);OGATEB::QAB(A)
      • P(c);::R(F)+B(G)
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