MESON Chess Problem Database

Problem Display
PID: 150011 (Q1B5/2p5/2Rp4/3RpN2/4kpp1/8/8/6K1 w - - 0 1)

Agapov, Igor Alexeyevich

17.Russian Championship, 2012

Q1B5/2p5/2Rp4/3RpN2/4kpp1/8/8/6K1

#2

6 + 6

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd5
      • 2.Rxc7#
    • 1...f3
      • 2.Rc4#
  • Tries
    • 1.Kf2?
      • threat
        • 2.Rc4#
      • 1...Kxd5
        • 2.Rxc7#
      • 1...g3+!
    • 1.Kg2?
      • threat
        • 2.Rc4#
      • 1...Kxd5
        • 2.Rxc7#
      • 1...f3+!
    • 1.Rd2?
      • threat
        • 2.Rc4#
      • 1...Kf3
        • 2.Rc3#
      • 1...d5!
    • 1.Rdxd6?
      • threat
        • 2.Rc4#
        • 2.Rxc7#
      • 1...cxd6
        • 2.Rxd6#
      • 1...f3
        • 2.Rc4#
        • 2.Qa4#
      • 1...Kf3!
    • 1.Rc2?
      • threat
        • 2.Rd4#
      • 1...Kf3
        • 2.Rd3#
      • 1...c6!
    • 1.Rxc7?
      • threat
        • 2.Rd4#
        • 2.Rxd6#
      • 1...f3
        • 2.Rd4#
        • 2.Rc4#
      • 1...Kf3!
    • 1.Qa2?
      • 1...Kf3
        • 2.Qg2#
      • 1...f3
        • 2.Qc4#
      • 1...g3!
    • 1.Qa4+?
      • 1...Kxd5
        • 2.Se7#
        • 2.Qc4#
      • 1...Kf3!
  • Keys
    • 1.Qa6!
      • threat
        • 2.Qd3#
      • 1...Kf3
        • 2.Qd3#
      • 1...Kxd5
        • 2.Qc4#
      • 1...f3
        • 2.Qc4#

There are these versions: 160857

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);OGATEB,S_FLIGHT,XR(B)::QAB(E)+R(D),XP(f)
    • P(b);SBLOCK::R(D)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Threat
        • R(D)
      • Vars
        • K(a);OGATEB,S_FLIGHT,XR(B)::QAB(E)+R(D),XP(f)
      • Refutation
        • P(c);CHECK
    • Try
      • K(A);P-FLIGHT
      • Threat
        • R(D)
      • Vars
        • K(a);OGATEB,S_FLIGHT,XR(B)::QAB(E)+R(D),XP(f)
      • Refutation
        • P(b);CHECK
    • Try
      • R(B);
      • Threat
        • QAB(E)+R(D),DCHECK
      • Vars
        • K(a);S_FLIGHT::QAB(E)+R(D),DCHECK
      • Refutation
        • P(e);
    • Try
      • R(B);XP(e)
      • Threat
        • DUALS(2)
      • Vars
        • P(f);OGATE,XR(B)::QAB(E)+R(D),XP(f)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(D);
      • Threat
        • QAB(E)+R(B),DCHECK
      • Vars
        • K(a);S_FLIGHT::QAB(E)+R(B),DCHECK
      • Refutation
        • P(f);
    • Try
      • R(D);XP(f)
      • Threat
        • DUALS(2)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
        • P(b);SBLOCK::QAR2(E)
      • Refutation
        • P(c);
    • Try
      • Q(E);CHECK
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(E);
    • Threat
      • QAB1(E)
    • Vars
      • K(a);S_FLIGHT::QAR2(E)
      • K(a);S_FLIGHT,XR(B)::QAB1(E)
      • P(b);SBLOCK::QAR2(E)
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