MESON Chess Problem Database

Problem Display
PID: 221343 (8/8/q1p2N2/3p4/3B2pb/RB3k1b/P1P1Np1R/KQ6 w - - 0 1)

Vasilenko, Anatoly Grigorovich

SuperProblem, 2019

8/8/q1p2N2/3p4/3B2pb/RB3k1b/P1P1Np1R/KQ6

#2

10 + 8

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qc4
      • 2.Bxc4#
    • 1...Qc8
      • 2.Bc4#
    • 1...Bg5
      • 2.Rxf2#
    • 1...f1Q
      • 2.Bxd5#
    • 1...f1S
      • 2.Bxd5#
    • 1...f1B
      • 2.Bxd5#
    • 1...f1R
      • 2.Bxd5#
  • Tries
    • 1.Qd1?
      • threat
        • 2.Bxd5#
      • 1...Qxa3
        • 2.Qd3#
      • 1...Qd3
        • 2.Qxd3#
      • 1...Qc4
        • 2.Bxc4#
      • 1...Qxe2!
  • Keys
    • 1.c4!
      • threat
        • 2.Qd3#
      • 1...Kxe2
        • 2.Qd1#
      • 1...Qxc4
        • 2.Bxc4#
      • 1...dxc4
        • 2.Qe4#
      • 1...f1Q
        • 2.Ba4#
      • 1...f1S
        • 2.Qf5#
      • 1...f1R
        • 2.Ba4#
      • 1...Bg5
        • 2.Rxf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • Q(g);N_GUARD::R(G)+B(H),XQ(g)
    • Q(g);N_GUARD::R(G)+B(H)
    • B(e);N_GUARD::R1(F),XP(a)
    • P(a);P_PINQ(B)::R(G)+B(H),DCHECK,XP(f)
    • P(a);::R(G)+B(H),DCHECK,XP(f)
  • Tries
    • Try
      • Q(B);
      • Threat
        • R(G)+B(H),DCHECK,XP(f)
      • Vars
        • Q(g);N_GUARD,P_PINP(C),XR(G)::QAR2(B)
        • Q(g);N_GUARD::QAR2(B),XQ(g)
        • Q(g);N_GUARD::R(G)+B(H),XQ(g)
      • Refutation
        • Q(g);P_SPINQ(g),XS(E)
  • Actual
    • P(D);
    • Threat
      • QAR2(B)
    • Vars
      • K(b);OGATEB,P_SPINP(a),S_FLIGHT,XS(E)::QAB1(B)
      • Q(g);OGATE,XP(D)::R(G)+B(H),XQ(g)
      • P(f);N_GUARD,XP(D)::QAB1(B)
      • P(a);P_PINQ(B)::R(G)+B(H)
      • P(a);::QAR2(B)
      • B(e);N_GUARD::R1(F),XP(a)
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