MESON Chess Problem Database

Problem Display
PID: 10391 (n4Bb1/2pR2Q1/3N4/2Pkr2R/PP3p2/1K2bP2/B1Pprp2/8 w - - 0 1)

Mansfield, Comins

Die Schwalbe, 1964

n4Bb1/2pR2Q1/3N4/2Pkr2R/PP3p2/1K2bP2/B1Pprp2/8

#2

12 + 10

4054 Complete Mansfield/III 1999

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4+
      • 2.Sf7#
    • 1...Ke6
      • 2.Rxe5#
    • 1...cxd6
      • 2.Rxd6#
    • 1...c6
      • 2.Kc3#
      • 2.Qxe5#
  • Tries
    • 1.Kb2+?
      • 1...Kd4
        • 2.Sb5#
        • 2.Sf5#
        • 2.Sf7#
        • 2.Qxe5#
      • 1...Kc6!
    • 1.Ka3+?
      • 1...Kd4
        • 2.Sb5#
        • 2.Qxe5#
      • 1...Kc6!
    • 1.Sc4+?
      • 1...Ke6
        • 2.Rxe5#
        • 2.Qe7#
      • 1...Kc6!
    • 1.Se4+?
      • 1...Ke6
        • 2.Rxe5#
        • 2.Qe7#
      • 1...Kc6+!
    • 1.Sb5+?
      • 1...Ke6
        • 2.Rxe5#
        • 2.Qe7#
      • 1...Kc6+!
    • 1.Sf5+?
      • 1...Ke6
        • 2.Qe7#
      • 1...Kc6+!
    • 1.Sb7+?
      • 1...Ke6
        • 2.Sd8#
        • 2.Rxe5#
        • 2.Qe7#
      • 1...Kc6+!
    • 1.Sf7+?
      • 1...Ke6
        • 2.Sd8#
      • 1...Kc6!
    • 1.Sc8+?
      • 1...Ke6
        • 2.Rxe5#
        • 2.Qe7#
      • 1...Kc6+!
    • 1.Se8+?
      • 1...Ke6
        • 2.Rxe5#
        • 2.Qe7#
      • 1...Kc6+!
    • 1.Rxe5+?
      • 1...Kd4+
        • 2.Sf7#
      • 1...Kc6+!
    • 1.Qxg8+?
      • 1...Kd4
        • 2.Sb5#
        • 2.Sf5#
        • 2.Qc4#
      • 1...Kc6!
    • 1.c4+?
      • 1...Kd4
        • 2.Sb5#
        • 2.Sf5#
        • 2.Sf7#
      • 1...Ke6
        • 2.Rxe5#
        • 2.Rh6#
        • 2.Re7#
        • 2.Qe7#
      • 1...Kc6!
  • Keys
    • 1.b5!
      • threat
        • 2.Qxe5#
      • 1...Kd4+
        • 2.Sf7#
      • 1...Kxc5+
        • 2.Sc4#
      • 1...Ke6
        • 2.Rxe5#
      • 1...Rxh5
        • 2.Kb4#
      • 1...Bxc5
        • 2.Kc3#
      • 1...Rf5
        • 2.Kb4#
      • 1...Rg5
        • 2.Kb4#
      • 1...Bd4
        • 2.Kb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • K(f);CHECK,P-FLIGHT::R(J)+S(I)
    • K(f);N_SPINR(g),S_FLIGHT::R1(H),XR(g)
    • P(h);OGATE,P_SPINP(h),XS(I)::R1(J),XP(h)
  • Tries
    • Try
      • K(C);CHECK,P-FLIGHT
      • Refutation
        • K(f);N_SPINR(g),S_FLIGHT
    • Try
      • K(C);CHECK,P-FLIGHT
      • Refutation
        • K(f);N_SPINR(g),S_FLIGHT
    • Try
      • S(I);CHECK
      • Refutation
        • K(f);N_SPINR(g),P_PINS(I),S_FLIGHT
    • Try
      • S(I);CHECK
      • Refutation
        • K(f);CHECK,N_SPINR(g),S_FLIGHT
    • Try
      • S(I);CHECK
      • Refutation
        • K(f);CHECK,N_SPINR(g),S_FLIGHT
    • Try
      • S(I);CHECK,N_PINR(g)
      • Vars
        • K(f);S_FLIGHT::QAR1(K)
      • Refutation
        • K(f);CHECK,S_FLIGHT
    • Try
      • S(I);CHECK
      • Refutation
        • K(f);CHECK,N_SPINR(g),S_FLIGHT
    • Try
      • S(I);CHECK
      • Vars
        • K(f);N_SPINR(g),S_FLIGHT::S(I)
      • Refutation
        • K(f);N_SPINR(g),P_PINS(I),S_FLIGHT
    • Try
      • S(I);CHECK
      • Refutation
        • K(f);CHECK,N_SPINR(g),S_FLIGHT
    • Try
      • S(I);CHECK
      • Refutation
        • K(f);CHECK,N_SPINR(g),S_FLIGHT
    • Try
      • R(H);CHECK,XR(g)
      • Vars
        • K(f);CHECK,P-FLIGHT::R(J)+S(I)
      • Refutation
        • K(f);CHECK,S_FLIGHT
    • Try
      • Q(K);CHECK,XB(j)
      • Refutation
        • K(f);N_SPINR(g),S_FLIGHT
    • Try
      • P(B);CHECK
      • Refutation
        • K(f);N_SPINR(g),P_PINP(B),S_FLIGHT
  • Actual
    • P(F);
    • Threat
      • QAR1(K),XR(g)
    • Vars
      • K(f);CHECK,P-FLIGHT::R(J)+S(I)
      • K(f);CHECK,P-FLIGHT,XP(G)::B(L)+S(I)
      • K(f);N_SPINR(g),S_FLIGHT::R1(H),XR(g)
      • R(g);N_SPINR(g),XR(H)::B(A)+K(C)
      • B(d);SBLOCK,XP(G)::B(A)+K(C)
      • R(g);::B(A)+K(C)
      • B(d);SBLOCK::B(A)+K(C)
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