MESON Chess Problem Database

Problem Display
PID: 259438 (2n5/8/1b2b3/2B1N3/3nB1p1/3Pk1P1/1KPp1pRr/3Q4 w - - 0 1)

Cheylan, Yves

4th HM., Probleemblad, 1984

2n5/8/1b2b3/2B1N3/3nB1p1/3Pk1P1/1KPp1pRr/3Q4

#2

9 + 9

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Ba2
      • 2.Sxg4#
    • 1...Bb3
      • 2.Sxg4#
    • 1...Bc4
      • 2.Sxc4#
      • 2.Sxg4#
    • 1...Bd5
      • 2.Sxg4#
    • 1...Bf5
      • 2.Sc4#
    • 1...Bd7
      • 2.Sc4#
    • 1...Bf7
      • 2.Sxg4#
    • 1...Bg8
      • 2.Sxg4#
    • 1...f1Q
      • 2.Qxd2#
    • 1...f1S
      • 2.Qe2#
    • 1...f1B
      • 2.Qxd2#
    • 1...f1R
      • 2.Qe2#
      • 2.Qxd2#
  • Tries
    • 1.Kc3?
      • threat
        • 2.Qxd2#
      • 1...f1S
        • 2.Qe2#
      • 1...Ba5+!
    • 1.Bf3?
      • threat
        • 2.Qe2#
      • 1...gxf3
        • 2.Qxf3#
      • 1...f1Q
        • 2.Qxd2#
      • 1...f1B
        • 2.Qxd2#
      • 1...Bxc5!
    • 1.Bd5?
      • threat
        • 2.Sc4#
      • 1...Bxd5
        • 2.Sxg4#
      • 1...Sd6!
    • 1.Bf5?
      • threat
        • 2.Sxg4#
      • 1...Bxf5
        • 2.Sc4#
      • 1...Rh4!
  • Keys
    • 1.Sf3!
      • threat
        • 2.Qxd2#
      • 1...gxf3
        • 2.Qxf3#
      • 1...f1S
        • 2.Qe2#
      • 1...Ba5
        • 2.Bxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 9
  • Sets
    • B(h);N_GUARD::S(I),XP(f)
    • B(h);N_GUARD::S(I)
    • P(b);::QAB1(A),XP(a)
    • P(b);::QAR1(A)
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Threat
        • QAB1(A),XP(a)
      • Vars
        • P(b);::QAR1(A)
      • Refutation
        • B(g);CHECK
    • Try
      • B(G);
      • Threat
        • QAR1(A)
      • Vars
        • P(f);OGATE,XB(G)::QAR1(A),XP(f)
        • P(b);::QAB1(A),XP(a)
      • Refutation
        • B(g);N_SPINS(e),XB(H)
    • Try
      • B(G);
      • Threat
        • S(I)
      • Vars
        • B(h);N_GUARD,XB(G)::S(I),XP(f)
      • Refutation
        • S(i);
    • Try
      • B(G);
      • Threat
        • S(I),XP(f)
      • Vars
        • B(h);N_GUARD,XB(G)::S(I)
      • Refutation
        • R(c);
  • Actual
    • S(I);
    • Threat
      • QAB1(A),XP(a)
    • Vars
      • P(f);OGATE,XS(I)::QAR1(A),XP(f)
      • P(b);::QAR1(A)
      • B(g);N_GUARD::B(H),XS(e)
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