MESON Chess Problem Database

Problem Display
PID: 99612 (8/8/8/2K5/8/3k4/2bB2Q1/2R5 w - - 0 1)

Schonberger, Tibor

Magyar Sakkvilag, 1933

8/8/8/2K5/8/3k4/2bB2Q1/2R5

#2

4 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Rc3#
    • 1...Bd1
      • 2.Rc3#
    • 1...Bb3
      • 2.Rc3#
    • 1...Ba4
      • 2.Rc3#
  • Tries
    • 1.Kd5?
      • 1...Bb1
        • 2.Rc3#
      • 1...Bd1
        • 2.Rc3#
      • 1...Ba4
        • 2.Rc3#
      • 1...Bb3+!
    • 1.Be1?
      • threat
        • 2.Qf3#
      • 1...Bd1
        • 2.Rc3#
      • 1...Ke3!
    • 1.Bb4?
      • threat
        • 2.Qf3#
      • 1...Bd1
        • 2.Rc3#
      • 1...Ke3!
    • 1.Bf4?
      • threat
        • 2.Qf3#
        • 2.Qxc2#
      • 1...Kc3
        • 2.Qxc2#
      • 1...Bb1
        • 2.Qf3#
      • 1...Bb3
        • 2.Qf3#
      • 1...Ba4
        • 2.Qf3#
      • 1...Bd1!
    • 1.Ba5?
      • threat
        • 2.Qf3#
      • 1...Bd1
        • 2.Rc3#
      • 1...Ke3!
    • 1.Bg5?
      • threat
        • 2.Qf3#
        • 2.Qxc2#
      • 1...Kc3
        • 2.Qxc2#
      • 1...Bb1
        • 2.Qf3#
      • 1...Bb3
        • 2.Qf3#
      • 1...Ba4
        • 2.Qf3#
      • 1...Bd1!
    • 1.Bh6?
      • threat
        • 2.Qf3#
        • 2.Qxc2#
      • 1...Kc3
        • 2.Qxc2#
      • 1...Bb1
        • 2.Qf3#
      • 1...Bb3
        • 2.Qf3#
      • 1...Ba4
        • 2.Qf3#
      • 1...Bd1!
    • 1.Qf1+?
      • 1...Ke4
        • 2.Re1#
      • 1...Kxd2!
    • 1.Qh3+?
      • 1...Ke2
        • 2.Qe3#
      • 1...Ke4
        • 2.Re1#
      • 1...Kxd2!
  • Keys
    • 1.Qg5!
      • threat
        • 2.Qe3#
      • 1...Ke2
        • 2.Qe3#
      • 1...Ke4
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • B(a);OGATE::R1(A)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • B(a);OGATE::R1(A)
      • Refutation
        • B(a);CHECK
    • Try
      • B(B);
      • Threat
        • QAR2(C)
      • Vars
        • B(a);OGATE::R1(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • B(B);
      • Threat
        • QAR2(C)
      • Vars
        • B(a);OGATE::R1(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • B(B);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);P-FLIGHT,P_SPINB(a)::QAR1(C),XB(a)
        • B(a);::QAR2(C)
      • Refutation
        • B(a);
    • Try
      • B(B);
      • Threat
        • QAR2(C)
      • Vars
        • B(a);OGATE::R1(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • B(B);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);P-FLIGHT,P_SPINB(a)::QAR1(C),XB(a)
        • B(a);::QAR2(C)
      • Refutation
        • B(a);
    • Try
      • B(B);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);P-FLIGHT,P_SPINB(a)::QAR1(C),XB(a)
        • B(a);::QAR2(C)
      • Refutation
        • B(a);
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);S_FLIGHT::R(A)
      • Refutation
        • K(b);P-FLIGHT,XB(B)
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(C)
        • K(b);S_FLIGHT::R(A)
      • Refutation
        • K(b);P-FLIGHT,XB(B)
  • Actual
    • Q(C);
    • Threat
      • QAR1(C)
    • Vars
      • K(b);S_FLIGHT::QAR1(C)
      • K(b);S_FLIGHT::QAB1(C)
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