MESON Chess Problem Database

Problem Display
PID: 106818 (2r5/7p/3N3K/2rp1p2/b2kP3/n5Q1/3B4/2bR4 w - - 0 1)

Scheel, Johan

Illustrated London News, 1910

2r5/7p/3N3K/2rp1p2/b2kP3/n5Q1/3B4/2bR4

#2

6 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rc3
      • 2.Be3#
    • 1...Bb2
      • 2.Bc3#
    • 1...Bxd2+
      • 2.Rxd2#
    • 1...Bc6
      • 2.Bxc1#
    • 1...Bd7
      • 2.Bxc1#
    • 1...Be8
      • 2.Bxc1#
    • 1...Sc2
      • 2.Bxc1#
    • 1...Sc4
      • 2.Qc3#
    • 1...f4
      • 2.Bc3#
  • Tries
    • 1.Bf4+?
      • 1...Bd2
        • 2.Rxd2#
        • 2.Qe3#
      • 1...Bxd1!
    • 1.Bg5+?
      • 1...Bd2
        • 2.Rxd2#
      • 1...Bxd1!
    • 1.exf5?
      • threat
        • 2.Qe3#
      • 1...Bxd2+
        • 2.Rxd2#
      • 1...Rc3
        • 2.Be3#
      • 1...Sc2
        • 2.Bxc1#
      • 1...Sc4
        • 2.Qc3#
      • 1...Re8!
  • Keys
    • 1.e5!
      • threat
        • 2.Qe3#
      • 1...Bxd2+
        • 2.Rxd2#
      • 1...Rc3
        • 2.Be3#
      • 1...f4
        • 2.Bc3#
      • 1...Sc2
        • 2.Bxc1#
      • 1...Sc4
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • R(e);SBLOCK::R(A)+B(B),DCHECK
    • B(a);N_PINB(B)::R(A)+B(B),DCHECK
    • B(a);CHECK,OGATE,P_SPINB(a),XB(B)::R(A),XB(a)
    • B(c);N_GUARD::R(A)+B(B),XB(a)
    • S(b);S_CUTB(c)::R(A)+B(B),XB(a)
    • S(b);S_CUTR(e)::QAB1(C)
    • P(g);N_PINB(B)::R(A)+B(B),DCHECK
  • Tries
    • Try
      • B(B);CHECK
      • Refutation
        • B(c);XR(A)
    • Try
      • B(B);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::R(A),XB(a)
      • Refutation
        • B(c);XR(A)
    • Try
      • P(D);XP(g)
      • Threat
        • QAB1(C)
      • Vars
        • B(a);CHECK,OGATE,P_SPINB(a),XB(B)::R(A),XB(a)
        • R(e);SBLOCK::R(A)+B(B),DCHECK
        • S(b);S_CUTB(c)::R(A)+B(B),XB(a)
        • S(b);S_CUTR(e)::QAB1(C)
      • Refutation
        • R(i);
  • Actual
    • P(D);
    • Threat
      • QAB1(C)
    • Vars
      • B(a);CHECK,OGATE,P_SPINB(a),XB(B)::R(A),XB(a)
      • R(e);SBLOCK::R(A)+B(B),DCHECK
      • P(g);N_PINB(B)::R(A)+B(B),DCHECK
      • S(b);S_CUTB(c)::R(A)+B(B),XB(a)
      • S(b);S_CUTR(e)::QAB1(C)
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