MESON Chess Problem Database

Problem Display
PID: 268833 (5Q1n/6pB/6pp/3pBR2/4k3/4p3/4K2n/2b5 w - - 0 1)

Sorochan, Vladimir Mikhailovich

Troll, 2022

(First published on Wed Apr 27 2022)

5Q1n/6pB/6pp/3pBR2/4k3/4p3/4K2n/2b5

#2

5 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...gxf5
      • 2.Qxf5#
  • Tries
    • 1.Bc7?
      • threat
        • 2.Rf4#
      • 1...Kd4
        • 2.Qb4#
      • 1...d4
        • 2.Re5#
      • 1...gxf5!
    • 1.Bxg7?
      • threat
        • 2.Rf4#
      • 1...gxf5
        • 2.Qxf5#
      • 1...d4
        • 2.Re5#
      • 1...Sf7!
    • 1.Bb8?
      • threat
        • 2.Rf4#
      • 1...Kd4
        • 2.Qb4#
      • 1...d4
        • 2.Re5#
      • 1...gxf5!
    • 1.Rg5?
      • threat
        • 2.Qf4#
      • 1...d4
        • 2.Qa8#
      • 1...Sf7
        • 2.Bxg6#
      • 1...hxg5!
    • 1.Qc5?
      • threat
        • 2.Qc2#
      • 1...gxf5
        • 2.Qd4#
      • 1...d4
        • 2.Rf4#
      • 1...Kxf5!
    • 1.Qc8?
      • threat
        • 2.Qc2#
      • 1...gxf5
        • 2.Qxf5#
      • 1...d4!
  • Keys
    • 1.Rh5!
      • threat
        • 2.Qf4#
      • 1...d4
        • 2.Qa8#
      • 1...Sf7
        • 2.Bxg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(f);OGATE,P_SPINP(f),XR(C)::QAB1(E),XP(f)
  • Tries
    • Try
      • B(B);
      • Threat
        • R1(C)
      • Vars
        • K(d);N_GUARD,P-FLIGHT,S_CUTP(e)::QAR2(E)
        • P(e);SBLOCK::R1(C)
      • Refutation
        • P(f);P_SPINP(f),XR(C)
    • Try
      • B(B);XP(h)
      • Threat
        • R1(C)
      • Vars
        • P(f);OGATE,P_SPINP(f),XR(C)::QAB1(E),XP(f)
        • P(e);SBLOCK::R1(C)
      • Refutation
        • S(i);
    • Try
      • B(B);
      • Threat
        • R1(C)
      • Vars
        • K(d);N_GUARD,P-FLIGHT,S_CUTP(e)::QAR2(E)
        • P(e);SBLOCK::R1(C)
      • Refutation
        • P(f);P_SPINP(f),XR(C)
    • Try
      • R(C);P_PINP(f)
      • Threat
        • QAR1(E)
      • Vars
        • P(e);OGATEB::QAB(E)
        • S(i);N_GUARD::B(D),XP(f)
      • Refutation
        • P(g);XR(C)
    • Try
      • Q(E);
      • Threat
        • QAB(E)
      • Vars
        • P(f);P_SPINP(f),XR(C)::QAR1(E)
        • P(e);::R1(C)
      • Refutation
        • K(d);P_SPINP(f),S_FLIGHT,XR(C)
    • Try
      • Q(E);
      • Threat
        • QAB(E)
      • Vars
        • P(f);OGATE,P_SPINP(f),XR(C)::QAB1(E),XP(f)
      • Refutation
        • P(e);
  • Actual
    • R(C);P_PINP(f)
    • Threat
      • QAR1(E)
    • Vars
      • P(e);OGATEB::QAB(E)
      • S(i);N_GUARD::B(D),XP(f)
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