MESON Chess Problem Database

Problem Display
PID: 225873 (8/8/8/1Bp5/4b2b/2P1kp1N/1Np3P1/1nK4Q w - - 0 1)

Wester, Anders Emil

Praca, 1959

8/8/8/1Bp5/4b2b/2P1kp1N/1Np3P1/1nK4Q

#2

7 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Be1
      • 2.Qxe1#
    • 1...Bg5
      • 2.Qe1#
    • 1...Bf6
      • 2.Qe1#
    • 1...Be7
      • 2.Qe1#
    • 1...Bd8
      • 2.Qe1#
  • Tries
    • 1.Qg1+?
      • 1...Bf2
        • 2.Qxf2#
      • 1...f2!
  • Keys
    • 1.Qd1!
      • threat
        • 2.Sc4#
      • 1...cxd1Q+
        • 2.Sxd1#
      • 1...cxd1R+
        • 2.Sxd1#
      • 1...cxd1S
        • 2.Sxd1#
      • 1...cxd1B
        • 2.Sxd1#
      • 1...Bd3
        • 2.Qxf3#
        • 2.Qxd3#
      • 1...Bd5
        • 2.Qd3#
      • 1...Bf5
        • 2.Qxf3#
      • 1...Bc6
        • 2.Qd3#
      • 1...Bg6
        • 2.Qxf3#
      • 1...Bb7
        • 2.Qd3#
      • 1...Bh7
        • 2.Qxf3#
      • 1...Ba8
        • 2.Qd3#
      • 1...Sd2
        • 2.Qxd2#
      • 1...Sa3
        • 2.Qd2#
      • 1...c4
        • 2.Sxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 14
    • REMOVED MATES = 5
  • Sets
    • B(f);N_GUARD::QAR2(B),XB(f)
    • B(f);N_GUARD::QAR2(B)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • B(f);N_GUARD,P_SPINB(f)::QAB1(B),XB(f)
      • Refutation
        • P(d);P_SPINP(d)
  • Actual
    • Q(B);
    • Threat
      • S(C)
    • Vars
      • P(b);CHECK,XQ(B)::S(C),XQ(b)
      • P(b);CHECK,XQ(B)::S(C),XR(b)
      • P(b);XQ(B)::S(C),XS(b)
      • P(b);XQ(B)::S(C),XB(b)
      • B(e);N_GUARD::QAR1(B)
      • B(e);N_GUARD::QAR1(B),XP(d)
      • S(a);N_GUARD::QAB1(B),XS(a)
      • S(a);N_GUARD::QAB1(B)
      • P(g);::S(C),XP(g)
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