MESON Chess Problem Database

Problem Display
PID: 189939 (3N4/2p2p2/1pR2P2/n2k4/P2bpP2/K2Q3B/8/8 w - - 0 1)

Kuijers, LA

Magyar Sakkvilag, 1912

3N4/2p2p2/1pR2P2/n2k4/P2bpP2/K2Q3B/8/8

#2

8 + 7

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Sb3
      • 2.Qc4#
      • 2.Qxb3#
    • 1...Sc4+
      • 2.Qxc4#
    • 1...Sb7
      • 2.Qc4#
      • 2.Qb3#
    • 1...exd3
      • 2.Bg2#
    • 1...e3
      • 2.Bg2#
  • Tries
    • 1.Bg2?
      • threat
        • 2.Bxe4#
        • 2.Qxe4#
      • 1...Sc4+
        • 2.Qxc4#
      • 1...Sxc6!
    • 1.Rd6+?
      • 1...Kc5
        • 2.Qxd4#
      • 1...Kxd6
        • 2.Qxd4#
      • 1...cxd6!
    • 1.Qb3+?
      • 1...Sc4+
        • 2.Qxc4#
      • 1...Sxb3!
  • Keys
    • 1.Sb7!
      • 1...Sc4+
        • 2.Qxc4#
      • 1...Kxc6
        • 2.Qxe4#
      • 1...Sxc6
        • 2.Qb3#
      • 1...Sxb7
        • 2.Qc4#
      • 1...exd3
        • 2.Bg2#
      • 1...b5
        • 2.Rc5#
      • 1...Sb3
        • 2.Qc4#
      • 1...e3
        • 2.Bg2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(c);CHECK,N_GUARD::QAB1(B),XS(c)
    • P(b);N_SPINB(a),OGATEB,XQ(B)::B(C)
    • P(b);OGATEB::B(C)
  • Tries
    • Try
      • B(C);P_PINP(b)
      • Threat
        • DUALS(2)
      • Vars
        • S(c);CHECK,N_GUARD::QAB1(B),XS(c)
      • Refutation
        • S(c);XR(F)
    • Try
      • R(F);CHECK
      • Vars
        • K(d);N_SPINB(a),P-FLIGHT::QAB1(B),XB(a)
        • K(d);P-FLIGHT,XR(F)::QAR2(B),XB(a)
      • Refutation
        • P(f);XR(F)
    • Try
      • Q(B);CHECK,N_PINB(a)
      • Vars
        • S(c);CHECK,N_GUARD,P_SPINS(c)::QAB1(B),XS(c)
      • Refutation
        • S(c);XQ(B)
  • Actual
    • S(H);
    • Vars
      • S(c);CHECK,N_GUARD::QAB1(B),XS(c)
      • K(d);N_SPINB(a),S_FLIGHT,XR(F)::QAB(B),XP(b)
      • S(c);N_GUARD,SBLOCK,XR(F)::QAB(B)
      • S(c);N_GUARD,XS(H)::QAB1(B)
      • P(b);N_SPINB(a),OGATEB,XQ(B)::B(C)
      • P(e);N_GUARD::R1(F)
      • S(c);N_GUARD::QAB1(B)
      • P(b);OGATEB::B(C)
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