MESON Chess Problem Database

Problem Display
PID: 85644 (5RB1/2B1K3/1bp3p1/2p5/2p1kP2/7Q/1N1p1R2/1q1rrN1b w - - 0 1)

Erokhin, Vladimir Alekseevich

Pavlov, Yury A

Magyar Sakkszovetseg, 1977

5RB1/2B1K3/1bp3p1/2p5/2p1kP2/7Q/1N1p1R2/1q1rrN1b

#2

9 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Re3
      • 2.Qxe3#
  • Tries
    • 1.Re2+?
      • 1...Kd4
        • 2.Be5#
        • 2.Qe3#
        • 2.Qh8#
      • 1...Rxe2!
  • Keys
    • 1.Qc3!
      • threat
        • 2.Sg3#
        • 2.Qe5#
        • 2.Qxc4#
      • 1...Qxb2
        • 2.Sg3#
      • 1...Rxf1
        • 2.Re2#
        • 2.Qe5#
      • 1...Bxc7
        • 2.Sg3#
        • 2.Qxc4#
      • 1...Qa2
        • 2.Sg3#
        • 2.Qe5#
      • 1...Qc2
        • 2.Sg3#
        • 2.Qe5#
      • 1...Qd3
        • 2.Qe5#
      • 1...Qc1
        • 2.Sg3#
        • 2.Qe5#
      • 1...Rc1
        • 2.Sxd2#
        • 2.Sg3#
        • 2.Qe5#
      • 1...Re3
        • 2.Qe5#
        • 2.Qxe3#
        • 2.Qxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(c);N_GUARD::QAR1(D),XR(c)
  • Tries
    • Try
      • R(C);CHECK
      • Refutation
        • R(c);XR(C)
  • Actual
    • Q(D);
    • Threat
      • DUALS(3)
    • Vars
      • Q(a);XS(B)::S(A)
      • Q(a);::QAR1(D)
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