MESON Chess Problem Database

Problem Display
PID: 134859 (8/1K6/8/5Q2/NP6/1p1pk3/3R1pP1/5R2 w - - 0 1)

Markovtsy, Vassyl Yuriovich

1/2 Prize, Schweizerische Schachzeitung, 2000-2001

8/1K6/8/5Q2/NP6/1p1pk3/3R1pP1/5R2

#2

7 + 4

23 Die Schwalbe 2009
15174 FIDE Album (2001-2003) 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd2
      • 2.Qxf2#
  • Tries
    • 1.Kc6?
      • 1...Kxd2
        • 2.Qxf2#
      • 1...Kd4
        • 2.Qf4#
      • 1...b2!
    • 1.Sc3?
      • threat
        • 2.Rxd3#
        • 2.Qxf2#
      • 1...Kd4
        • 2.Qc5#
      • 1...Kxd2!
    • 1.Sc5?
      • threat
        • 2.Qxf2#
      • 1...Kxd2
        • 2.Qxd3#
      • 1...Kd4!
    • 1.Re2+?
      • 1...Kxe2
        • 2.Qxf2#
      • 1...Kd4
        • 2.Re4#
        • 2.Qe4#
        • 2.Qc5#
      • 1...dxe2!
    • 1.Qf3+?
      • 1...Kxd2
        • 2.Qxf2#
      • 1...Kd4!
    • 1.g3?
      • threat
        • 2.Qxd3#
        • 2.Qf4#
      • 1...Kxd2
        • 2.Qxf2#
      • 1...Kd4!
  • Keys
    • 1.Sb2!
      • 1...Kxd2
        • 2.Qxd3#
      • 1...Kd4
        • 2.Rxd3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(d);S_FLIGHT,XR(B)::QAR2(F),XP(a)
  • Tries
    • Try
      • K(G);S_FLIGHT
      • Vars
        • K(d);S_FLIGHT,XR(B)::QAR2(F),XP(a)
        • K(d);P_SPINP(c),S_FLIGHT::QAR2(F)
      • Refutation
        • P(b);
    • Try
      • S(D);
      • Threat
        • DUALS(2)
      • Vars
        • K(d);P_SPINP(c),S_FLIGHT::QAB1(F)
      • Refutation
        • K(d);S_FLIGHT,XR(B)
    • Try
      • S(D);
      • Threat
        • QAB1(F),XP(a)
      • Vars
        • K(d);S_FLIGHT,XR(B)::QAR1(F),XP(c)
      • Refutation
        • K(d);P_SPINP(c),S_FLIGHT
    • Try
      • R(B);CHECK
      • Vars
        • K(d);P-FLIGHT,XR(B)::QAR1(F),XP(a)
      • Refutation
        • P(c);XR(B)
    • Try
      • Q(F);CHECK
      • Vars
        • K(d);S_FLIGHT,XR(B)::QAR2(F),XP(a)
      • Refutation
        • K(d);P_SPINP(c),S_FLIGHT
    • Try
      • P(C);
      • Threat
        • DUALS(2)
      • Vars
        • K(d);S_FLIGHT,XR(B)::QAR2(F),XP(a)
      • Refutation
        • K(d);P_SPINP(c),S_FLIGHT
  • Actual
    • S(D);
    • Vars
      • K(d);S_FLIGHT,XR(B)::QAR1(F),XP(c)
      • K(d);P_SPINP(c),S_FLIGHT::R1(B),XP(c)
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