MESON Chess Problem Database

Problem Display
PID: 95212 (7b/8/8/3K4/1Q1N2p1/3B4/1B1p4/3k4 w - - 0 1)

Sar, Hanus

Pravo lidu, 1908

7b/8/8/3K4/1Q1N2p1/3B4/1B1p4/3k4

#2

5 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sb3?
      • threat
        • 2.Qxd2#
      • 1...Ke1
        • 2.Qxd2#
      • 1...Bc3!
    • 1.Sf3?
      • threat
        • 2.Qxd2#
        • 2.Qb3#
        • 2.Qa4#
      • 1...Bxb2
        • 2.Qxd2#
      • 1...Bc3
        • 2.Qb3#
        • 2.Qa4#
      • 1...gxf3!
    • 1.Ba1?
      • threat
        • 2.Qb1#
      • 1...Kc1
        • 2.Qb1#
      • 1...Ke1!
    • 1.Bc3?
      • threat
        • 2.Qb1#
      • 1...Kc1
        • 2.Qb1#
      • 1...Ke1!
    • 1.Qe7?
      • threat
        • 2.Bc2#
        • 2.Qe2#
      • 1...Bxd4
        • 2.Qe2#
      • 1...Be5!
    • 1.Qf8?
      • threat
        • 2.Qf1#
      • 1...Ke1
        • 2.Qf1#
      • 1...Bf6!
  • Keys
    • 1.Bc1!
      • threat
        • 2.Qxd2#
      • 1...Kxc1
        • 2.Qb1#
      • 1...Ke1
        • 2.Qxd2#
      • 1...dxc1Q
        • 2.Be2#
      • 1...dxc1S
        • 2.Bc2#
      • 1...dxc1B
        • 2.Bc2#
        • 2.Be2#
      • 1...dxc1R
        • 2.Be2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);
      • Threat
        • QAR1(C),XP(b)
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::QAB1(C),XP(b)
      • Refutation
        • B(d);
    • Try
      • S(D);
      • Threat
        • DUALS(3)
      • Vars
        • B(d);XB(A)::QAR1(C),XP(b)
      • Refutation
        • P(c);XS(D)
    • Try
      • B(A);
      • Threat
        • QAR2(C)
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
    • Try
      • B(A);
      • Threat
        • QAR2(C)
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • B(d);XS(D)::QAB1(C)
      • Refutation
        • B(d);
    • Try
      • Q(C);
      • Threat
        • QAR2(C)
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
      • Refutation
        • B(d);
  • Actual
    • B(A);
    • Threat
      • QAR1(C),XP(b)
    • Vars
      • K(a);OGATEB,P-FLIGHT,XB(A)::QAR1(C)
      • K(a);P-FLIGHT,P_SPINP(b)::QAB1(C),XP(b)
      • P(b);SBLOCK,XB(A)::B(B)
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