MESON Chess Problem Database

Problem Display
PID: 210112 (8/3RB2b/r2r2p1/2p1k3/2B1p1Kp/1P6/4NP2/4Q3 w - - 0 1)

Eriksson, Einar

Springaren, 1988

8/3RB2b/r2r2p1/2p1k3/2B1p1Kp/1P6/4NP2/4Q3

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rb6
      • 2.Qc3#
    • 1...Rc6
      • 2.Qc3#
    • 1...Re6
      • 2.Rd5#
      • 2.Qc3#
    • 1...Rf6
      • 2.Qc3#
  • Tries
    • 1.Sg1?
      • threat
        • 2.Sf3#
      • 1...Kd4
        • 2.Bf6#
      • 1...e3
        • 2.Qxe3#
      • 1...Rd3
        • 2.f4#
      • 1...Rf6
        • 2.Qc3#
      • 1...Rd5!
    • 1.Sc3?
      • threat
        • 2.Qxe4#
      • 1...Kd4
        • 2.Bf6#
      • 1...Rd4
        • 2.f4#
      • 1...e3
        • 2.Qxe3#
      • 1...g5!
    • 1.Bxd6+?
      • 1...Kf6
        • 2.Rf7#
        • 2.Qc3#
      • 1...Rxd6!
    • 1.Bf6+?
      • 1...Rxf6
        • 2.Qc3#
      • 1...Kxf6!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Sf3#
      • 1...Kxd4
        • 2.Bf6#
      • 1...Rxd4
        • 2.f4#
      • 1...cxd4
        • 2.f4#
      • 1...e3
        • 2.Qxe3#
      • 1...Rd5
        • 2.Rxd5#
      • 1...Rf6
        • 2.Rd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • R(f);N_GUARD::QAB(A)
  • Tries
    • Try
      • S(B);P_PINP(a)
      • Threat
        • S(B)
      • Vars
        • K(d);N_SPINP(a),P_SPINR(f),S_FLIGHT::B(H)
        • P(a);OGATEB::QAR2(A),XP(a)
        • R(f);::P(C)
        • R(f);N_GUARD::QAB(A)
      • Refutation
        • R(f);
    • Try
      • S(B);P_PINP(a)
      • Threat
        • QAR1(A),XP(a)
      • Vars
        • K(d);N_SPINP(a),P_SPINR(f),S_FLIGHT::B(H)
        • R(f);::P(C)
        • P(a);OGATEB::QAR2(A),XP(a)
      • Refutation
        • P(g);
    • Try
      • B(H);CHECK,XR(f)
      • Refutation
        • R(e);XB(H)
    • Try
      • B(H);CHECK
      • Vars
        • R(f);SBLOCK,XB(H)::QAB(A)
      • Refutation
        • K(d);S_FLIGHT,XB(H)
  • Actual
    • S(B);P_PINP(a)
    • Threat
      • S(B)
    • Vars
      • K(d);N_SPINP(a),P_SPINR(f),S_FLIGHT,XS(B)::B(H)
      • R(f);XS(B)::P(C)
      • P(c);SBLOCK,XS(B)::P(C)
      • P(a);OGATEB::QAR2(A),XP(a)
      • R(f);OGATE::R1(G),XR(f)
      • R(f);OGATE::R1(G)
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