MESON Chess Problem Database

Problem Display
PID: 82098 (B6r/1R4B1/4P2P/2pN1p1Q/n1p1kp1K/3R4/2p5/1r3Nn1 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Themes-64, 1962

B6r/1R4B1/4P2P/2pN1p1Q/n1p1kp1K/3R4/2p5/1r3Nn1

#2

10 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Se2
      • 2.Qxe2#
      • 2.Qf3#
    • 1...Sf3+
      • 2.Qxf3#
    • 1...Sh3
      • 2.Qe2#
      • 2.Qf3#
  • Tries
    • 1.Sc3+?
      • 1...Kxd3
        • 2.Rd7#
        • 2.Qxf5#
      • 1...Sxc3!
    • 1.Se7?
      • threat
        • 2.Qxf5#
      • 1...Sf3+
        • 2.Qxf3#
      • 1...Kxd3
        • 2.Rd7#
      • 1...Rxh6
        • 2.Rbb3#
      • 1...cxd3
        • 2.Rb4#
      • 1...Rf8!
    • 1.Re3+?
      • 1...Kxd5
        • 2.Rd7#
      • 1...fxe3!
  • Keys
    • 1.Rf7!
      • threat
        • 2.Qxf5#
      • 1...Sf3+
        • 2.Qxf3#
      • 1...Kxd3
        • 2.Sxf4#
      • 1...Rxh6
        • 2.Sb4#
      • 1...cxd3
        • 2.Sd2#
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(b);CHECK,N_GUARD::QAB1(E),XS(b)
  • Tries
    • Try
      • S(D);CHECK
      • Refutation
        • S(d);XS(D)
    • Try
      • S(D);
      • Threat
        • QAB1(E),XP(i)
      • Vars
        • S(b);CHECK,N_GUARD::QAB1(E),XS(b)
        • K(f);S_FLIGHT,XR(B)::R(H)
        • R(j);N_GUARD,P_PINQ(E),XP(G)::B(J)+R(H)
        • P(e);SBLOCK,XR(B)::B(J)+R(H),DCHECK
      • Refutation
        • R(j);
    • Try
      • R(B);CHECK
      • Vars
        • K(f);P_SPINP(i),S_FLIGHT,XS(D)::B(J)+R(H),DCHECK
      • Refutation
        • P(g);XR(B)
  • Actual
    • R(H);
    • Threat
      • QAB1(E),XP(i)
    • Vars
      • S(b);CHECK,N_GUARD::QAB1(E),XS(b)
      • K(f);S_FLIGHT,XR(B)::S(D),XP(g)
      • R(j);N_GUARD,P_PINQ(E),XP(G)::B(J)+S(D)
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