MESON Chess Problem Database

Problem Display
PID: 48130 (7k/8/r3p1RK/5B2/8/1b6/8/5Q2 w - - 0 1)

Hamina, O

Sola, Pentti Olavi

Uusi Aura, 1935

7k/8/r3p1RK/5B2/8/1b6/8/5Q2

#2

4 + 4

3310 2345 Chess Problems 1997

SOLUTION

  • SOUND
  • Tries
    • 1.Bb1?
      • threat
        • 2.Qf6#
        • 2.Qf8#
      • 1...Ra7
        • 2.Qf8#
      • 1...Ra8
        • 2.Qf6#
      • 1...e5!
    • 1.Bc2?
      • threat
        • 2.Qf6#
        • 2.Qf8#
      • 1...Ra7
        • 2.Qf8#
      • 1...Ra8
        • 2.Qf6#
      • 1...e5!
    • 1.Bd3?
      • threat
        • 2.Qf6#
        • 2.Qf8#
      • 1...Ra7
        • 2.Qf8#
      • 1...Ra8
        • 2.Qf6#
      • 1...e5!
    • 1.Bh3?
      • threat
        • 2.Qf6#
        • 2.Qf8#
      • 1...Ra7
        • 2.Qf8#
      • 1...Ra8
        • 2.Qf6#
      • 1...e5!
    • 1.Be4?
      • threat
        • 2.Qf6#
        • 2.Qf8#
      • 1...Ra7
        • 2.Qf8#
      • 1...Ra8
        • 2.Qf6#
      • 1...e5!
    • 1.Bg4?
      • threat
        • 2.Qf6#
        • 2.Qf8#
      • 1...Ra7
        • 2.Qf8#
      • 1...Ra8
        • 2.Qf6#
      • 1...e5!
    • 1.Qxa6?
      • threat
        • 2.Qc8#
        • 2.Qa8#
      • 1...exf5
        • 2.Qa1#
        • 2.Qf6#
      • 1...e5
        • 2.Qf6#
      • 1...Bd5
        • 2.Qc8#
      • 1...Ba4!
  • Keys
    • 1.Bxe6!
      • threat
        • 2.Rg8#
        • 2.Qf6#
        • 2.Qf8#
      • 1...Rxe6
        • 2.Qf8#
      • 1...Bxe6
        • 2.Qf6#
      • 1...Ra7
        • 2.Rg8#
        • 2.Qf8#
      • 1...Ra8
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(B);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);::QAR2(A)
        • R(b);SBLOCK::QAB(A)
      • Refutation
        • P(c);P_PINR(C)
    • Try
      • B(B);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);::QAR2(A)
        • R(b);SBLOCK::QAB(A)
      • Refutation
        • P(c);P_PINR(C)
    • Try
      • B(B);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);::QAR2(A)
        • R(b);SBLOCK::QAB(A)
      • Refutation
        • P(c);P_PINR(C)
    • Try
      • B(B);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);::QAR2(A)
        • R(b);SBLOCK::QAB(A)
      • Refutation
        • P(c);P_PINR(C)
    • Try
      • B(B);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);::QAR2(A)
        • R(b);::QAB(A)
      • Refutation
        • P(c);P_PINR(C)
    • Try
      • B(B);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);::QAR2(A)
        • R(b);SBLOCK::QAB(A)
      • Refutation
        • P(c);P_PINR(C)
    • Try
      • Q(A);XR(b)
      • Threat
        • DUALS(2)
      • Vars
        • P(c);OGATE::QAB(A)
        • B(a);::QAR(A)
      • Refutation
        • B(a);
  • Actual
    • B(B);XP(c)
    • Threat
      • DUALS(3)
    • Vars
      • R(b);P_PINR(C),XB(B)::QAR2(A)
      • B(a);XB(B)::QAB(A)
      • R(b);SBLOCK::QAB(A)
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