MESON Chess Problem Database

Problem Display
PID: 46312 (6b1/2R5/4pk2/8/5N1K/4P1N1/8/3R3Q w - - 0 1)

Surkov, Ruslan Albertovich

Die Schwalbe, 2002

6b1/2R5/4pk2/8/5N1K/4P1N1/8/3R3Q

#2

7 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Kg4?
      • threat
        • 2.Qh8#
      • 1...Ke5
        • 2.Qh8#
      • 1...Bh7!
    • 1.Se4+?
      • 1...Ke5
        • 2.Rc5#
      • 1...Kf5!
    • 1.Sgh5+?
      • 1...Ke5
        • 2.Rc5#
      • 1...Kf5!
    • 1.Sfh5+?
      • 1...Ke5
        • 2.Rc5#
        • 2.Qe4#
      • 1...Kg6!
    • 1.Qe4?
      • threat
        • 2.Sgh5#
        • 2.Sfh5#
      • 1...e5
        • 2.Sgh5#
        • 2.Qf5#
        • 2.Qg6#
      • 1...Bf7!
    • 1.Qd5?
      • threat
        • 2.Se4#
        • 2.Sgh5#
        • 2.Qg5#
      • 1...Bf7
        • 2.Qg5#
      • 1...Bh7
        • 2.Sgh5#
        • 2.Qxe6#
        • 2.Qg5#
      • 1...e5
        • 2.Qd8#
      • 1...exd5!
    • 1.Qc6?
      • 1...Ke5
        • 2.Qc3#
      • 1...Bh7
        • 2.Qxe6#
      • 1...Bf7!
  • Keys
    • 1.Qa8!
      • 1...Ke5
        • 2.Qa1#
      • 1...Bf7
        • 2.Qh8#
      • 1...Bh7
        • 2.Qh8#
      • 1...e5
        • 2.Qd8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(F);P-FLIGHT
      • Threat
        • QAB(B)
      • Vars
        • K(b);S_FLIGHT::QAB(B)
      • Refutation
        • B(c);
    • Try
      • S(D);CHECK
      • Vars
        • K(b);S_FLIGHT::R(G)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • S(D);CHECK
      • Vars
        • K(b);S_FLIGHT::R(G)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • S(E);CHECK
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Refutation
        • B(c);
    • Try
      • Q(B);
      • Threat
        • DUALS(3)
      • Vars
        • B(c);::QAB1(B)
        • P(a);SBLOCK::QAB(B)
      • Refutation
        • P(a);XQ(B)
    • Try
      • Q(B);P_PINP(a)
      • Vars
        • K(b);N_SPINP(a),S_FLIGHT::QAB(B)
        • B(c);N_GUARD::QAR1(B),XP(a)
      • Refutation
        • B(c);
  • Actual
    • Q(B);
    • Vars
      • K(b);S_FLIGHT::QAB(B)
      • B(c);OGATE::QAB(B)
      • P(a);SBLOCK::QAB(B)
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