MESON Chess Problem Database

Problem Display
PID: 206112 (8/2N5/7r/2p5/1pkp1pR1/1p1p2R1/1K2bQN1/8 w - - 0 1)

Tompuri, Ismo

Tehtavaniekka, 2019

8/2N5/7r/2p5/1pkp1pR1/1p1p2R1/1K2bQN1/8

#2

6 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...fxg3
      • 2.Se3#
    • 1...f3
      • 2.Se3#
  • Tries
    • 1.Se3+?
      • 1...dxe3
        • 2.Rxf4#
        • 2.Qxf4#
      • 1...fxe3!
    • 1.Rxf4?
      • threat
        • 2.Se3#
      • 1...d2
        • 2.Qxe2#
      • 1...Re6!
    • 1.Qxe2?
      • threat
        • 2.Qxd3#
      • 1...fxg3
        • 2.Se3#
      • 1...f3
        • 2.Se3#
      • 1...dxe2!
    • 1.Qxf4?
      • threat
        • 2.Se3#
        • 2.Qc1#
      • 1...Rh1
        • 2.Se3#
        • 2.Qf7#
      • 1...Re6
        • 2.Qc1#
      • 1...Bd1
        • 2.Se3#
      • 1...d2!
  • Keys
    • 1.Qe3!
      • threat
        • 2.Qc1#
      • 1...dxe3
        • 2.Rxf4#
      • 1...fxe3
        • 2.Sxe3#
      • 1...Rh1
        • 2.Qe6#
      • 1...Bd1
        • 2.Qxd3#
      • 1...d2
        • 2.Qxb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • P(g);N_GUARD,P_SPINP(f),XR(D)::S(C)
    • P(g);N_GUARD,P_SPINP(f)::S(C)
  • Tries
    • Try
      • S(C);CHECK
      • Refutation
        • P(g);P_SPINP(f),XS(C)
    • Try
      • R(E);P_PINP(f),XP(g)
      • Threat
        • S(C)
      • Vars
        • P(c);OGATEB::QAB(B),XB(a)
      • Refutation
        • R(i);
    • Try
      • Q(B);P_PINP(c),XB(a)
      • Threat
        • QAB1(B),XP(c)
      • Vars
        • P(g);N_GUARD,S_CUTP(f),XR(D)::S(C)
        • P(g);N_GUARD,S_CUTP(f)::S(C)
      • Refutation
        • P(c);N_SPINP(c),XQ(B)
    • Try
      • Q(B);P_PINP(f),XP(g)
      • Threat
        • DUALS(2)
      • Vars
        • R(i);::QAR(B)
        • B(a);::S(C)
      • Refutation
        • P(c);
  • Actual
    • Q(B);
    • Threat
      • QAR(B)
    • Vars
      • P(f);OGATEB,P_SPINP(g),XQ(B)::R(E),XP(g)
      • P(g);P_SPINP(f),XQ(B)::S(C),XP(g)
      • R(i);N_GUARD::QAB(B)
      • B(a);N_GUARD::QAB1(B),XP(c)
      • P(c);OGATE::QAB1(B),XP(b)
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Developed and maintained by Brian Stephenson.
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