MESON Chess Problem Database

Problem Display
PID: 192594 (3n1B2/3R1p2/1Kp3p1/1nN1k3/2B1pbP1/8/1N3Q2/4r3 w - - 0 1)

Heyl, Peter

Sachsische Zeitung, 2001

(First published on Sat Apr 28 2001)

3n1B2/3R1p2/1Kp3p1/1nN1k3/2B1pbP1/8/1N3Q2/4r3

#2

8 + 9

16210 Problemschach-Jahrbuch (2001) 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Kf6
      • 2.Qxf4#
    • 1...Sa3
      • 2.Qd4#
    • 1...Sc3
      • 2.Qd4#
    • 1...Sd4
      • 2.Qxd4#
    • 1...Sa7
      • 2.Qd4#
    • 1...Sc7
      • 2.Qd4#
    • 1...f5
      • 2.Bg7#
  • Tries
    • 1.Sbd3+?
      • 1...Kf6
        • 2.Qxf4#
      • 1...exd3!
    • 1.Scd3+?
      • 1...Kf6
        • 2.Qxf4#
      • 1...exd3!
    • 1.Bxf7?
      • threat
        • 2.Bg7#
      • 1...Kf6
        • 2.Qxf4#
      • 1...Bg5
        • 2.Sc4#
      • 1...Bh6
        • 2.Sc4#
      • 1...Se6!
    • 1.Rd4?
      • threat
        • 2.Sd7#
      • 1...Kf6
        • 2.Qxf4#
      • 1...e3
        • 2.Qxf4#
      • 1...Be3
        • 2.Rxe4#
      • 1...Re3!
    • 1.Rd5+?
      • 1...Kf6
        • 2.Qxf4#
        • 2.g5#
      • 1...cxd5!
    • 1.Re7+?
      • 1...Kd6
        • 2.Rxe4#
        • 2.Re6#
        • 2.Re8#
        • 2.Qxf4#
      • 1...Kf6
        • 2.Qxf4#
      • 1...Se6!
  • Keys
    • 1.Rd6!
      • threat
        • 2.Sd7#
      • 1...Be3
        • 2.Qf6#
      • 1...e3
        • 2.Sbd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • K(e);P_SPINB(c),S_FLIGHT::QAR2(B),XB(c)
    • S(d);N_GUARD::QAB1(B)
    • S(d);N_GUARD::QAB1(B),XS(d)
    • P(h);N_GUARD::B(H)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • K(e);P_SPINB(c),S_FLIGHT::QAR2(B),XB(c)
      • Refutation
        • P(b);XS(A)
    • Try
      • S(E);CHECK
      • Vars
        • K(e);P_SPINB(c),S_FLIGHT::QAR2(B),XB(c)
      • Refutation
        • P(b);XS(E)
    • Try
      • B(C);XP(h)
      • Threat
        • B(H)
      • Vars
        • K(e);P_SPINB(c),S_FLIGHT::QAR2(B),XB(c)
        • B(c);::S(A)
      • Refutation
        • S(i);
    • Try
      • R(G);
      • Threat
        • S(E)
      • Vars
        • K(e);P_SPINB(c),S_FLIGHT::QAR2(B),XB(c)
        • P(b);::QAB1(B),XB(c)
        • B(c);S_CUTR(a)::R1(G),XP(b)
      • Refutation
        • R(a);
    • Try
      • R(G);CHECK
      • Refutation
        • P(f);XR(G)
    • Try
      • R(G);CHECK
      • Vars
        • K(e);P_SPINB(c),S_FLIGHT::QAR2(B),XB(c)
      • Refutation
        • S(i);P_SPINS(i)
  • Actual
    • R(G);
    • Threat
      • S(E)
    • Vars
      • B(c);OGATE,P_PINS(E)::QAB1(B)
      • P(b);N_GUARD::S(A)
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