MESON Chess Problem Database

Problem Display
PID: 7240 (1n6/1Q1p1P2/7K/7B/2k1P1R1/4P1p1/P3Rpq1/1N2n3 w - - 0 1)

Surkov, Ruslan Albertovich

2nd Place, KNSB-125 JT, 1999

1n6/1Q1p1P2/7K/7B/2k1P1R1/4P1p1/P3Rpq1/1N2n3

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Qb5#
    • 1...Sd3
      • 2.Rc2#
  • Tries
    • 1.Rc2+?
      • 1...Kd3
        • 2.Qb3#
      • 1...Sxc2!
    • 1.Rg5?
      • threat
        • 2.Qb3#
        • 2.Qb5#
      • 1...Kd3
        • 2.Qd5#
      • 1...d5!
    • 1.Qb4+?
      • 1...Kd3
        • 2.Qb5#
      • 1...Kxb4!
    • 1.a4?
      • threat
        • 2.Qb5#
      • 1...Kd3
        • 2.Qb5#
      • 1...Kc5!
    • 1.f8Q?
      • threat
        • 2.Qd5#
        • 2.Qb3#
      • 1...Kd3
        • 2.Qb5#
      • 1...Qxe4
        • 2.Qb3#
      • 1...Sc6
        • 2.Qa6#
        • 2.Qb3#
      • 1...d5
        • 2.Qxd5#
        • 2.Qb3#
      • 1...d6!
    • 1.f8B?
      • threat
        • 2.Qd5#
        • 2.Qb3#
      • 1...Kd3
        • 2.Qb5#
      • 1...Qxe4
        • 2.Qb3#
      • 1...Sc6
        • 2.Qa6#
        • 2.Qb3#
      • 1...d5
        • 2.Qxd5#
        • 2.Qb3#
      • 1...d6!
  • Keys
    • 1.Rb2!
      • threat
        • 2.Qd5#
        • 2.Qb5#
      • 1...Kd3
        • 2.Qb3#
      • 1...Kc5
        • 2.Qd5#
      • 1...Qxe4
        • 2.Qb5#
      • 1...Sc6
        • 2.Qb5#
      • 1...d5
        • 2.Qxd5#
        • 2.Qb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(e);S_FLIGHT::QAB(I)
    • S(a);N_GUARD,SBLOCK::R(C)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • K(e);S_FLIGHT::QAR2(I)
      • Refutation
        • S(a);XR(C)
    • Try
      • R(F);
      • Threat
        • DUALS(2)
      • Vars
        • K(e);S_FLIGHT::QAR2(I)
      • Refutation
        • P(f);
    • Try
      • Q(I);CHECK
      • Vars
        • K(e);S_FLIGHT::QAB(I)
      • Refutation
        • K(e);P-FLIGHT,XQ(I)
    • Try
      • P(B);
      • Threat
        • QAB1(I)
      • Vars
        • K(e);S_FLIGHT::QAB(I)
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • P(J);
      • Threat
        • DUALS(2)
      • Vars
        • K(e);S_FLIGHT::QAB(I)
        • Q(c);P_SPINQ(c),XP(E)::QAB1(I)
      • Refutation
        • P(f);
    • Try
      • P(J);
      • Threat
        • DUALS(2)
      • Vars
        • K(e);S_FLIGHT::QAB(I)
        • Q(c);P_SPINQ(c),XP(E)::QAB1(I)
      • Refutation
        • P(f);
  • Actual
    • R(C);
    • Threat
      • DUALS(2)
    • Vars
      • K(e);S_FLIGHT::QAR2(I)
      • K(e);P-FLIGHT::QAR1(I)
      • Q(c);P_SPINQ(c),XP(E)::QAB1(I)
      • S(g);::QAB1(I)
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